Hutton, Rex L. Number systems; : an intuitive approach [electronic resource] / [by] Rex L. Hutton.. — Scranton, : Intext Educational Publishers, [1971]. — xii, 361 p. : illus. 25 cm. Includes bibliographies. ISBN: 0700222944 9780700222940 LCCN: 71132910 Subjects--Topical Terms: Arithmetic--Foundations.Numeration.Arithmétique--Fondements.Numération. LC Class. No.: QA248 / .H84 Dewey Class. No.: 513