by Bustanuddin Agus $12.00
by Lester R. Brown $6.00
by Adelbert Snijders, OFM Cap $9.00
by Erica L. Panjaitan $6.00
by Truman Simanjuntak, Bagyo Prasetyo, Retno Handini $10.00
by Sri Ratna Saktimulya $12.00