Lawrence, F. C. Marginal costing / by F. C. Lawrence and E. N. Humphreys. - 2nd ed. - London : Macdonald & Evans, 1967. - ix, 113 p. ; 23 cm. Index present. ISBN: 0712113096 Subjects--Topical Terms: Cost accounting. Dewey Class. No.: 657.42 / LAM 1967