Crowdis, David G. Introduction to mathematical ideas/ [by] David G. Crowdis and Brandon W. Wheeler. - New York: McGraw-Hill, [1968, c1969]. - xii, 352 p.: illus., 23 cm. Includes bibliographical references. LCCN: 68027505 Subjects--Topical Terms: Mathematics.Matematica. Dewey Class. No.: 510 / C953i