by Ir. Daisy P. Sriyadi Hendaryono $6.00
by Ir. FX. Susanto $7.00
by dr. St. Arif Haliman, MPH dkk $4.00
by Hutabarat, Sahala & Evans, Stewart M $6.00
by J. F. Dumanauw $7.00
by E. Martasudjita, Pr. $9.00