Corinne Nyquist
Augusto Cattaneo
Illinois State Library
Lee Andrew Hilyer
Margaret T. Lane
John Henry Quinn
Ruth A. Fraley
American Library Association. Government Documents Round Table.
Patrick Danowski
UNESCO
M. Pearce
Unknown Author
Linda R. Musser
Grzegorz Bogdan
Melbourne (Vic.). Royal Technical College. Dept. of Applied Chemistry.
Journées d'étude (1949 Université de Liège)
Marlene van Doorn
M. Hopkins