Snyder, Llewellyn R. Computational arithmetic [by] Llewellyn R. Snyder. - New York, McGraw-Hill [1968] LCCN: 67026174 Subjects--Topical Terms: Arithmetic -- Problems, exercises, etc.--Arithmetic -- Problems, exercises, etc. LC Class. No.: QA139 / .S64 Dewey Class. No.: 511.9