by WK $13.00
by Pradipta $11.00
by Al. Wahjasudibja, Pr. $6.00
by Ir. C. Totok Sutrisno $6.00
by WK $11.00
by NN $3.00
by Prof. Drs. S. Pamudji, M.P.A $9.00
by $7.00
by Haryoto $5.00