by Drs. G. Kartasapoetra
$7.00

by Ir. Daisy P. Sriyadi Hendaryono, M.Si & Ir. Ari Wijayani
$6.00

by Sr. Paulana Deeken, SSpS.
$3.00

by Maria Farida Indrati S.
$11.00

by Pandi Winoto, CP
$6.00

by Ir. Abbas Siregar Djarijah
$6.00