by Herbert Vorgrimler
$4.00

by Al. Wahjasudibja, Pr.
$3.00

by Ir. Eddy Afrianto & Ir. Evi Liviawaty
$6.00

by E. Martasudjita, Pr.
$3.00

by Rachman Sutanto
$9.00

by Dr. I. Bambang Sugiharto
$7.00