na YOGYA-02090000030466 20090227024459.0 ind 010-020900000030466 510 Sis SISTEM kilat matematika dasar metode trachtenberg alih bahasa, Soeparno Cet. 2 Jakata Rosda Jayaputra 1992 21 cm Judul asli : The trachtenberg speed system of basic mathematics Matematika - Ekonomi Suparno YOPDYOG(B) 6-07-06 1 Msref 97P0092534