by Fauziah Muhlisah $6.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Kurtines, William M. & Jacob L. Gerwitz $11.00
by WK $12.00
by $9.00
by Srivastava. UK., GV. Shenoy, SC. Sharma $11.00
by Iip D. Yahya $16.00
by L.Y. Wiranaga $6.00