by H. Rahmat Rukmana $5.00
by H. Rahmat Rukmana $6.00
by George R. Terry $9.00
by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Don W.S., Threes Emir, dan Cherry H $13.00
by Ir. Rustam Hakim, M.T., IALI & Dr. Ing. Ir. Eka SediadiR., IAI $9.00