by WK $13.00
by $12.00
by WK $12.00
by $6.00
by Nursalam $7.00
by Kansil C.S.T $11.00
by Soedarmo, Sumarmo Poorwo $6.00
by Prof. Dr. Ir. Ali Khomsan $11.00
by R. Soegeng $16.00
by Ir. Endar Sugiarto, B.A $6.00
by Dr. P. A. van Der Weij $7.00