Cowling, T. G. Molecules in motion. - London, New York, New York, Hutchinson's University Library, 1950. - 183 p. diagrs. 19 cm. - Hutchinson's university library: Mathematical and physical sciencs, no. 44 . Includes Index Subjects--Topical Terms: Gases.Molecules. LC Class. No.: QC161 / .C68 Dewey Class. No.: 533 / COW 1960