by Dr. Ir. Akhmad Fauzi, M.Sc. & Dr. Dra. Suzy Anna, M.Si $12.00
by Hardiansyah Asmail $10.00
by Ahmad Tohari $6.00
by Liestyo Soewito $6.00
by Ratna Indraswari Ibrahim $6.00
by Anand Krishna $7.00
by APPMI $12.00