by Drs. Amin W. Tunggal Ak., M.B.A $22.00
by Drs. H. Burhanuddin Salam, M.M $11.00
by Samekto, S.S., M.A $7.00
by Prof. J. Suprapto, M.A. APU $9.00
by A. Shallaby $9.00
by $7.00