by Drs. Amin Wijaja Tunggal, M.B.A
$6.00

by Parakkasi, Aminuddin
$6.00

by Tim Agro Kanisius
$9.00

by Prof. Dr. H. Abdurrahmat Fathoni, M.Si
$7.00

by Dra. Sri R.D. Putranti, M.S
$16.00

by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM
$5.00