na JATIM-06090000040214 20090625133120.0 ind 979-495-163-3 0010-060900000040214 0 CB/D13/1994-223 Arifin Zainal 0 Matematika Ekoonomi 2 Malang IKIP Malang viii, 128 hlm. ; 24 cm 0 0 1 0