by $4.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $12.00
by AAK (Aksi Agraris Kanisius) $6.00
by Ir. H. Rahmat Rukmana $6.00
by Yoh. Rohmadi Mulyono, MSF. $6.00
by Alex Kertamanah $7.00
by Tomy Irfani $9.00
by $12.00