by Ir. Moehar Daniel, M.S $7.00
by Charles P. Kindleberger $7.00
by Patt Roesle Materka $9.00
by Prof. Dr. Oemar Hamalik $9.00
by Drs. Ad. Rooijakkers $5.00
by Dra. Roestiyah NK $7.00
by James D. Tabor $18.00
by Adrian Sutedi, S. H., M. H. $0.00