Clark, F. Le Gros 1892- Four thousand million mouths : scientific humanism and the shadow of world hunger / edited by F. Le Gros Clark and N. W. Pirie. - London ; New York : Oxford University Press, 1951. - 222 p. : ill. ; 19 cm. LCCN: 52-006239 Subjects--Topical Terms: Food supply. Dewey Class. No.: 338.15 CLA