Opportunity 2000, understanding and serving users in an electronic library 15th International Essen Symposium, 12 October-15 October 1992 to commemorate the 20th anniversary of the Essen University Library : festschrift in honour of Herbert S. White

por International Essen Symposium.
Publicado 1993

Information superhighway the role of librarians, information scientists, and intermediaries : 17th International Essen Symposium, 24 October - 27 October 1994 : festschrift in honor of Frederick Wilfrid Lancaster

Publicado 1995

Electronic documents and information, from preservation to access 18th International Essen Symposium, 23 October - 26 October 1995 : Festschrift in honor of Patricia Battin

Publicado 1996