Lewis, J. Parry. 1927- An introduction to mathematics for students of economics [by] J. Parry Lewis. - 2nd ed. - London, New York, Macmillan; St. Martin's P., 1969. - xiii, 590 p. ill.; 23 cm. Bibliography: p. 561-562. ISBN: 0333010213 LCCN: 77076382 //r892 Nat. Bib. No.: B69-20512 Subjects--Topical Terms: Mathematics. LC Class. No.: QA39 / LEW 1969 Dewey Class. No.: 510/.024/33