Crump, William Leonerd . Introduction to Economic Statistics / Textual Documents William Leonerd Crump, Alson C. Patton & Arthur R. Tebbutt. - 1st ed. / - New York : McGraw - Hill book company , 1938. - xi,423p. : ill ; 23cm . Index ISBN: PB Subjects--Index Terms: Economics T/G-Economics Dewey Class. No.: 330 / C 888 In