by Joseph Losco
$32.00

by Prof. Drs. S. Pamudji, M.P.A
$9.00

by Drs. G. Kartasapoetra
$7.00

by Dr. G. Kartasapoetra dan H. Marsetyo
$7.00

by -
$11.00

by Prof. Dr. J. Winardi, SE
$11.00