by $4.00
by H. R. Kartadisastra $5.00
by E. Martasudjita, Pr. $4.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Dr. FX. Mudji Sutrisno, SJ $7.00
by H. Rahmat Rukmana $5.00