by Ir. H. Rahmat Rukmana $6.00
by Rondang Pasaribu $6.00
by Ir. Abbas Siregar Djarijah $6.00
by Drs. Sri Panudju Karso $6.00
by Suharso, A.S.P $6.00
by Dr. Martin Harun, OFM / LBI $7.00
by Jazuni, S.H. $10.00