00614nam a22001931 4500 1/18519 020115s1973 enk 1 eng d 0471077100 19059 DLC GR-PeUP 510.2'433 BL Black, John B., 1931- Essential mathematics for economists/ J.Black,J.F.Bradley Chichester: John Wiley & Sons, 1973 x, 268 p.: fig.; 23 cm. Includes index Economics, Mathematical. Bradley, James F. INST UNIPILB MAIN 20040709 510.2'433 BL 00137873 00137873 LOAN 0 1