by Ir. Irianto Aritonang, dkk
$6.00

by Drs. Daryanto
$6.00

by Gunawan Widjaja, A. Yani
$7.00

by E. Martasudjita, Pr.
$4.00

by H. Endang Saifuddin Anshari, M.A
$9.00

by Anwar Hudijono & Anshari Thayib
$12.00