by Dr. Drs. H. Mohammad Zain, Ak.& Drs. H. Dodo Syarief Hidayat
$8.00

by S.P. Varma
$18.00

by V. Lestari
$7.00

by Busroh, Ismid D.I
$11.00

by Adnan Buyung Nasution
$4.13

by Prof. DR. S.P. Siagian, M.P.A
$9.00