by Irianto Aritonang $7.00
by Ir. Bambang Cahyono $7.00
by Muh. Ibrahim Salim $9.00
by Dede Juanda J.S. & Ir. Bambang Cahyono $6.00
by Sawitri Supardi Sadarjoen $9.00
by K.H. Moenawar Chalil $11.00