na INLIS000000000046796 20170123080944.0 $0010-011700000000710 $a 651.7. DJO k C.4 $a Drs. Djoko Purwanto,M.B.A. $a Korespondensi Bisnis Modern $a Ke-1 $a Jakarta $b Erlangga $c 2007 $a Arpus kab. Magetan $a 40.631-0