by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by $6.00
by Dami Editore $9.00
by Nh. Dini $7.00
by $7.00
by dr. Daniel Makes, Prof. Dr. dr. Susworo $5.00
by Asghar A. Engineer $6.00
by Suharso, A.S.P $6.00
by WK $12.00
by Amru Yusuf $6.00
