by Syahrin Harahap $9.00
by Paul J. Centi $5.00
by Pudji Isdriani K $7.00
by Ariesandi Setyono $7.00
by Tim Pustaka Familia $6.00
by Robert H. Thouless $7.00
by Arief, Sritua $6.00
by Drs. G. Kartasapoetra $7.00
by S. Soegijanto $11.00