TY - BOOK AU - Lewis,J.Parry TI - An introduction to mathematics for students of economics SN - 0333010213 AV - QA39 LEW 1969 U1 - 510/.024/33 PY - 1969/// CY - London, New York PB - Macmillan, St. Martin's P. KW - Mathematics N1 - Bibliography: p. 561-562 ER -