In 1890–1906 a Russian edition of Brockhaus, which subsequently had considerable success, was issued from the St. Petersburg office of Brockhaus. In contrast, S.N. Yushakov designed his Bolshaya entsiklopedya (“Great Encyclopaedia”; 1900–09) on the “Meyer” model. After “Granat” the next important encyclopaedia was the 65-volume Bolshaya sovetskaya entsiklopedya (“Great Soviet Encyclopaedia”; 1926–47), which was eventually discredited; the second edition (1949–58) had a Marxist-Leninist approach but was less biassed on nonpolitical subjects. It represented almost the whole of the Soviet Union’s cultural resources: 8,000 scholars contributed articles, and the appended bibliographies were truly international in scope. One complete volume was devoted to the Soviet Union. The yearbooks that supplemented this encyclopaedia were very well produced and maintained the high standards of the original work. From 1970 to 1978 a 30-volume third edition was issued. The reduction in size was accomplished by editing and the use of a smaller typeface. Early reviews indicated that the quality of the work was similar to that of the second edition. From 1973 to 1983 Macmillan released an English translation of the third Russian edition.
There was also a series of editions of the much smaller Malaya sovetskaya entsiklopedya (“The Little Soviet Encyclopaedia”), first issued in 1928–31.
In the United States, the first edition of The New International Encyclopaedia was issued in 1902–04 and was subsequently supplemented by yearbooks. The Encyclopedia Americana, which traced its ancestry to an English-language adaptation (1829–33) of the seventh edition of Brockhaus, took on new strength in 1902 when the editor of Scientific American, Frederick C. Beach, was appointed editor of the Americana. It has enjoyed growing success through its policy of following the continuous revision system, and yearbooks have supplemented it from 1923 onward. In 1950–51 a completely new American work, Collier’s Encyclopedia, appeared in 20 volumes, and subsequent editions have been supplemented by yearbooks since 1960. Collier’s was noted for its large number of illustrations and maps.
The “Espasa,” the Enciclopedia universal ilustrada europeo-americana (1905–33), like the Enciclopedia italiana, eschewed revision in favour of a series of sizable supplements. One complete volume was devoted to Spain and was separately revised and reissued from time to time. A smaller encyclopaedia, the Salvat universal diccionario enciclopédico (first issued in 1907–13), was revised at frequent intervals. Another major Spanish encyclopaedia, the Enciclopedia labor (first issued 1955–60), devoted one volume each to major subject areas, and an index volume provided the key to the total contents. This encyclopaedia was notable for the attention it paid to every Spanish-speaking part of the world.
One of the most important of all encyclopaedias, the Enciclopedia italiana di scienze, lettere, ed arti (1929–39), was famous for its lavish production, its superb illustrations, and its lengthy, scholarly, and well-documented articles. Even its defense of Fascist ideology was not allowed to impinge on the general impartiality of the text. Supplements were issued after World War II. The postwar Dizionario enciclopedico italiano (1955–61), issued by the same publishers, was a much smaller, well-illustrated work. The Enciclopedia europea was released in Milan between 1976 and 1984. Although consisting largely of brief articles, it had numerous signed long articles of good quality. In Germany the three giants of the German encyclopaedia world—Brockhaus, “Meyer,” “Herder”—continued to produce new editions in the 20th century.
In spite of the continuing popularity of Larousse, France produced three other encyclopaedias of note in the 20th century. The Encyclopédie française (begun 1935) was an outstanding collection of monographs by well-known scholars and specialists, arranged in classified form and available in loose-leaf binders, supplemented by a continuously revised index. Its 21 volumes, each under the direction of a different authority, dealt with (1) human mental tools (logical thought, language, and mathematics); (2) physics; (3) heaven and earth; (4) life; (5) living beings; (6) human beings (the normal and the sick); (7) the human species; (8) the study of the mind; (9) the economic and social universe; (10) the modern state; (11) international life; (12) chemical science and industry; (13) industry and agriculture; (14) daily life; (15) education and learning theory; (16–17) arts and literatures; (18) the written word; (19) philosophy and religion; and (20) the world in its development (history, evolution, prospective); the 21st volume contained an index. The articles were notable for their almost total concentration on contemporary issues in the fields considered.
The Encyclopédie de la Pléiade (begun 1955) was an encyclopaedic series, each work (some in more than one volume) being a self-contained treatment of a broad subject field written in narrative form.
One of the most interesting new encyclopaedias was the Encyclopaedia Universalis (first issued 1968–74), edited by Claude Grégory and owned by the French Book Club and Encyclopædia Britannica, Inc. (since 2005 solely by Encyclopædia Britannica, Inc.). This work, inspired by L’Encyclopédie, eschewed the inclusion of minor items in favour of extensive and very well-illustrated articles on important subjects, and it paid special attention to modern science and technology. It was accompanied by a symposium and an elaborate thesaurus-index.
Encyclopaedia Universalis was doubly notable as the product of a contemporary publishing phenomenon known in the industry as “coproduction.” The term is applied in general to the collaborative efforts of publishing concerns in two or more countries that have combined forces to produce an encyclopaedia for sale in one of the countries or, with modifications to the volumes, in two or several countries. Successful examples of coproduction in the 20th century include the Buritanika Kokusai Dai Hyakka Jiten (Britannica International Encyclopædia) in Japan and the Concise Encyclopædia Britannica in China (both discussed below). Encyclopædia Britannica, Inc., in addition, was similarly involved in the development of the Taiwan edition of the Concise Encyclopædia Britannica in traditional Chinese characters (1989); the Korean Britannica World Encyclopædia; the Turkish AnaBritannica; two Spanish-language encyclopaedias, the Enciclopedia Barsa de consulta fácil and the Enciclopedia hispánica; the Portuguese-language Enciclopédia Barsa and Enciclopédia Mirador Internacional, a scholarly set first published in Brazil in 1975; Il Modulo, published in Italy; Britannica Hungarica Világenciklopédia (2002), published in Budapest; and Britannica Edycja Polska (1997–2005), published in Poznań, Pol. Coproduction was taken worldwide with localized editions of the one-volume Britannica Concise Encyclopedia, first published in English in 2002, based on Merriam-Webster’s Collegiate Encyclopedia (2000), itself a coproduction between Britannica and Merriam-Webster, Inc. Within a decade, versions of Britannica Concise augmented with local content were planned in Arabic, Chinese, Croatian, Macedonian, Malayalam, Romanian, Russian, Spanish, Tamil, Thai, and Vietnamese.
Other major instances of coproduction involved The New Caxton Encyclopedia, which originated in Italy with Istituto Geografico de Agostini and subsequently appeared in Great Britain, first sold in serial parts as Purnell’s New English Encyclopedia (1966) and then in a bound set of 18 volumes (1966); in France there appeared a version called Alpha: La Grande Encyclopédie Universelle en Couleurs, and in Spain a version called Monitor. The American-made The Random House Encyclopedia was adapted and translated in various languages and under various names for distribution in several countries.
By the 21st century virtually every Western country had domestically produced or released either a single-volume or a multivolume encyclopaedia in its native tongue. Many encyclopaedias were available additionally, and some solely, in CD-ROM, DVD, and online formats.