by Sunanto, Drs.
$9.00

by Rene Amon
$0.00

by Soedarmo, Sumarmo Poorwo
$6.00

by Ministry of Energy and Mineral Resources
$135.00

by Syaifuddin
$12.00

by Prof. Sr. Surjono Soekamto, S.H., M.A. dan Ratih Lestarini, S.H.
$6.00