by Jane Scrivner $11.00
by Stallings $18.00
by Tanenbaum $13.00
by Thompson Ngoen $12.00
by Tarwoto $9.00
by WK $12.00
by Dr. Abdurrahman Qadir, MA $6.00
by Ir. Heri Purnama $11.00
by Abdulkerim Tursun $9.00
by Maria A. Sardjono $7.00