by Doddy Pamudji $7.00
by Ir. Hatta Sunanta, B.Sc., MS $5.00
by Drs. Herman Darmawi $9.00
by Aline de Petigny $6.00
by - $6.00
by Prof. DR. Made Pidarta $11.00
by Asril Sitompul, S.H. $7.00
by Ir. Suharto $7.00
by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Ir. A. G. Kartasapoetra $6.00
by - $7.00
by R. Soeroso, S. H. $9.00
