by Sri Whidarto
$11.00

by FERRY BARRYADI; IWAN YUSWANDI
$6.00

by Drs. Solichin Abdul Wahab, M.A
$7.00

by Ir. Kaslan A. Tohir
$12.00

by H. Rahmat Rukmana
$6.00

by Kasmir, S.E., M.M
$9.00