Introductory readings in chemical and technical German edited for rapid reading, with a summary of reading difficulties, a chemical German frequency list, and progressive page vocabularies and notes [by] John Theodore Fotos and John L. Bray.

By Fotos, John Theodore.
New York | London J. Wiley | Chapman & Hall 1941 .
xivi, 303 p. 21 cm..

German grammar for chemists and other science students with simple graded readings based on vocabulary and syntax frequency studies

By Fotos, John Theodore.
New York | London J. Wiley & sons, inc. | Chapman & Hall, limited 1938 .
xxii, 323 p. 21 cm..