by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by Prof. Dr. H. Jalaluddin $11.00
by A. Rahman I Doi $5.00
by H. Rahmat Rukmana $6.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $7.00
by Adi W. Gunawan $11.00