by $16.00
by Ir. Yushinta Fujaya, M.Si $7.00
by Ir. M. Lies Suprapti $6.00
by Y.I. Iswarahadi, SJ. $4.00
by Ir. A. G. Kartasapoetra $6.00
by E. Martasudjita, Pr. $3.00
by Larry Diamond $7.00
by P. Suhardiman $6.00
by H. R. Kartadisastra $5.00
by $6.00
by Niniek Suparni, S.H. $6.00
by R. Soegijatno Tjakranegara, S. H. $11.00