by Zulkarimein Nasution $9.00
by Drs. Suyadi Prawirosentono, MBA $7.00
by Rene Amon $0.00
by Max Sutherland & Alice K. Sylvester $12.00
by Prof. Dr. Soegyarto Mangkuatmodjo $13.00
by Drs. Herman Darmawi $9.00