Cumming, Lan Helvetius : his life and place in the history of educational thought / by Lan Cumming; with an introduction by Nicholas Hans - London : Routledge and Kegan Paul, 1955 - xi, 260p.; 21cm. Subjects--Topical Terms: EducationHelvetius, 1715-1771 Educational sociology Education-Philosophy Dewey Class. No.: 370.92 / CUM-HE