na JATIM-06090000035741 20090625132632.0 ind 0010-060900000035741 0 CB/D13 2002-008 Drs. Supriyono 0 Abakus 2b bina mental aritmatika Surabaya SIC 2002 v., 90 hlm.; 21 cm. 0 0 Suprianto 1 0