by Cochran, William G $9.00
by H. Rahmat Rukmana $5.00
by Tinbergen, Jan $6.00
by Don WS, Cherry Hadipraja $13.00
by Ir. Setijo Pitojo $6.00
by Guritno, Pandam $5.00
by Agus Maryono $9.00
by Abdul Aziz asy-Syinnawi $6.00