na INLIS000000000010431 Eng 0010-0224010431 Introduction to business mathematics Boston: Kent, c1986 Gaughan, Edward D. NULL Boston: Kent, c1986 1986 xx, 519 hal.; ilus., 28 cm. xx, 519 hal.; ilus., 28 cm. 053405238X 650.015 13 Gau i 650.015 13 Gau i Business mathematics 3100089014686