Science at the cross roads : papers presented to the International Congress of the History of Science and Technology held in London from June 20th to July 3rd, 1931
International Congress of the History of Science and Technology. 2d, London, 1931
235 p. : map.
"Short communications on the unpublished writings of Karl Mark dealing with mathematics, the natural sciences, technology, and the history of these subjects, by E. Colman": p.-235.
by the delegates of the U.S.S.R. --