Timmermans, Jean Notion d'espece en chimie .English#Chemical species Jean Timmermanstranslated into english by R. E. Oesper. - New York, N.Y. Chemical publishing co 1940 - viii p., 1 l., : 177 p. diagrs. 22 cm. Translated from the revised French manuscript. Subjects--Topical Terms: Chemistry, Physical and theoretical. Dewey Class. No.: 541.9 / T53C14