by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Rosetta Reizt $11.00
by Rachman Sutanto $9.00
by F. Suryatmo $7.00
by Ir. H. Rahmat Rukmana $6.00
by AAK (Aksi Agraris Kanisius) $6.00