Boer, Germain B., 1937- Direct cost and contribution accounting an integrated management accounting system Germain Boer - New York Wiley [1974] - ix, 246 p. ill. 23 cm. - Wiley series on systems and controls for financial management . "A Wiley interscience publication." Subjects--Topical Terms: Direct costing Dewey Class. No.: 657 / .42