by Marshall E. Dimock $12.00
by $20.00
by Clacke & Crossland $9.00
by Alex Kertamanah $7.00
by Duvey, K.J $7.00
by Prof. DR. S.P. Siagian, M.P.A $9.00
by Khalil Abdul Karim $11.00
by H. Rahmat Rukmana $6.00
by Warisno $6.00
by $6.00
by Brooks $20.00
by Novia Syahidah $6.00