by Ir. H. Rahmat Rukmana & Yuyun Y $6.00
by M. Ghufron H. Kordi K $7.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $7.00
by AAK $5.00
by Ir. Juhaeni Radi $5.00
by Sastrodiwirjo, Soemargo, dkk $5.00