by J. Satrio, S.H.
$6.00

by Muhammad Chirzin
$5.00

by Dr. Al Rasyid, SpS, Dr. Lyna Soertidewi, SpS(K)
$7.00

by Prof. DR. Taliziduhu Ndraha
$12.00

by Ir. Supraptono Djajadirana
$9.00

by Moenaf H. Regar
$7.00