Boyer, Carl B. The concepts of the calculus a critical and historical discussion of the derivative and the integral. With a foreword by R. Courant. - New York Hafner Pub. Co. 1949. - 346 p. illus. 24 cm. Issued also as thesis, Columbia University. Bibliography: p. [311]-335. LCCN: a 50009022 Subjects--Topical Terms: Mathematics--History.Mathematics--Philosophy.Calculus Dewey Class. No.: 517