Wain, G. T. (Geoffrey T.) text New York Van Nostrand Reinhold Co. 1978 monographic 205 p. : ill. ; 24 cm. edited by G.T. Wain. Includes bibliographical references and index. Mathematics Study and teaching QA12 .M37 510/.7/1 0442301413 77019025 UOEL 000 20150608084623.0 831732