by R. Soeparmono, SH. $6.00
by Abdul Baqir Zein $7.00
by TRUDI CANAVAN $16.00
by WK $13.00
by Prof. Ir. Zoer'ani Djamal Irwan, M.Sc $9.00
by Prof. J. Suprapto, M.A. APU $9.00