by Cotton, F. Albert & Geoffrey Wilkinson $11.00
by Koentjaraningrat $7.00
by Ir. H. Rahmat Rukman, MBA $6.00
by Dr. Ir. Kemas Ali Hanafiah, M.S., dkk $11.00
by Gottschalk, Louis $6.00
by Abdoelmanap, Soerowo & T.H. Manurung $6.00