by Heru Susanto
$6.00

by Ir. M. Lies Suprapti
$6.00

by Dr. P. Hardono Hadi
$7.00

by Dr. Ir. Kemas Ali Hanafiah, M.S., dkk
$11.00

by Ir. L. Widarto & FX. Sudarto C. Ph
$5.00

by AAK (Aksi Agraris Kanisius)
$6.00