by Ir. Heinz Frick & Moediartianto $7.00
by DM. Etter, Terj. Drs. Kusuma Wiraman $13.00
by Dixon, S.L. $7.00
by Thabrani, Rinaldi $12.00
by Drs. Daryanto $6.00
by Aziz Alimul $9.00