by WK $13.00
by Aziz Alimul $7.00
by $7.00
by Ir. M. Lies Suprapti $7.00
by Prof. J. Suprapto, M.A. APU $16.00
by Sjadzali, H. Munawir $5.00
by Ir. Abbas Siregar Djarijah $6.00
by Hilman Hariwijaya & Boim Lebon $6.00
by J. Soedjati Djiwandono $0.00
by RARA $6.00