Lewis, J. Parry An introduction to mathematics for students of economics / J. Parry Lewis . - 2nd ed. . - London : Macmillan ;New York : St Martin's Press, 1971 . - XIII-590 p. ; 22 cm. - Macmillan Student Editions 28 . Bibliogr.Index. ISBN: 333010213 Source: 32867 Achat Universal Decimal Class. No.: 330.115.