by Malvino $20.00
by Ir. Hieronymus Budi Santoso $5.00
by WK $11.00
by $18.00
by Drs. Djalinus Syah., dkk $11.00
by Potma $0.00
by Prof. Dr. Suharsimi Arikunto, dkk $7.00
by Thalib, Sajuti $6.00