by Ir. FX. Susanto $7.00
by Dr. Ir. Muhammad Rasyaf, MS $9.00
by Abd Ahmed An-Naim, dkk $6.00
by PIKA $5.00
by Muh. Ibrahim Salim $9.00
by Drs. D. Ketut Sukardi $9.00
by Weaver, Rip $7.00