by Bruce Herrick dan Charles P. Kindleberger
$12.00

by Prof. Dr. Sondang P. Siagian, M.P.A
$7.00

by Ir. Bambang Cahyono
$6.00

by Prof. Dr. S. Nasution, M.A.
$7.00

by Ir. Arifin Arief, M. P
$5.00

by Ir. Suyatno Risza
$9.00