by $12.00
by Prof. Dr. N. Driyarkara, SJ $6.00
by $6.00
by Ir. H. Rahmat Rukmana $6.00
by Ir. Suharto $7.00
by H. Rahmat Rukmana $6.00
by Glenn A. Welsch $13.00
by J. Price Gittinger $6.00
by Kasmir, S.E., M.M $7.00
by WK $13.00
by Sutarni M. Soerjowinoto $6.00
by Leden Marpaung, S.H. $11.00