by Drs. A. Munir $7.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Harry Simons $13.00
by AAK $6.00
by Ir. Hatta Sunanta, B.Sc., MS $5.00
by Mas Djomul $6.00
by AM Fatwa $11.00
by Hilman Hariwijaya & Boim Lebon $6.00
by - $7.00
by $6.00