by Haryoto $5.00
by Ir. H. Rahmat Rukmana $6.00
by Miller, Mary Susan, Ph.D $0.00
by E. Martasudjita, Pr. $4.00
by M. Ismail Yusanto, M. Karebet Widjayakusuma $9.00
by Bole Malo, Agustinus $5.00