by Dr. Ir. Wisnu Cahyadi, M.Si $11.00
by M. Ghufron H. Kordi K $7.00
by Aloys Budi Purnomo, Pr. $6.00
by Dwijawiyata, dkk $5.00
by Marsana Windhu $3.00
by Ir. H. Rahmat Rukmana $5.00