by $6.00
by Baum, Warren C & Stokes M. Tolbert $9.00
by Dr. Ir. Akhmad Fauzi, M.Sc. & Dr. Dra. Suzy Anna, M.Si $12.00
by Sukadji, Soetarlinah $6.00
by Kunarjo $11.00
by Fairhurst, Michael C $6.00