by WK $12.00
by Thomas Cain $9.00
by Tanenbaum $13.00
by G. Siregar, Laksmi $7.00
by Drs. Paulus Wahana $6.00
by Ir. M. Lies Suprapti $5.00
by $9.00
by Achmad Tjahhono, Mahagiyani $12.00
by Ir. Budi Samadi $6.00
by Aziz Alimul $11.00
by M. Ahmad Muabbir al-Qathany, dkk $5.00
by - $12.00