by $4.00
by Ir. Moehar Daniel, M.S & Ir. Darmawati, M.Sc & Ir. Nieldalina, M.Si $7.00
by Daniel L. Smith $11.00
by Dr. Ir. Adji Sastrosupadi, MS $11.00
by Don W.S., Threes Emir, dan Cherry H $7.00
by E. Martasudjita, Pr. $9.00