by Dr. Sofyan Syafri Harahap, M.S,Ac $11.00
by $11.00
by Achmad Tjahhono, Mahagiyani $12.00
by Squire, Lyn & Herman van der Tak $6.00
by G. Kartasapoetra, dkk $9.00
by Radiks Purba $13.00