by Lita Soetopo $7.00
by Drs. Herman Darmawi $9.00
by Prof. Dr. Sudarwan Danim $11.00
by Ir. Joko Mulyanto $5.00
by Drs. Daryanto $7.00
by H. Rahmat Rukmana $5.00
by Wijanto, dkk $7.00