by E. Martasudjita, Pr. $3.00
by AAK $7.00
by Warisno $7.00
by Ibu Teresa $3.00
by DR. Ir. Hj. Tati Nurmala, S.W $6.00
by Ir. H. Rahmat Rukmana, MBA., M.Sc. & Uu Sugandi Saputra, B.Sc $6.00