by H. Rahmat Rukmana $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Ir. Setijo Pitojo $6.00
by M. Firdaus $0.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by C.A. Sanchez $9.00
by Sudarto $6.00
by Maman KH $9.00
by $7.00
by Siti Marjam $9.00
by V. Lestari $5.00
by Ahmad Tohari $6.00