by Dr. Ir. Muhammad Rasyaf, MS $7.00
by Drs. Yayan Sutrian $9.00
by AAK $7.00
by AAK (Aksi Agraris Kanisius) $5.00
by Padhyay, Catto O. $7.00
by Lindholm, Richard W & Hartojo Wignjowijoto $7.00