by Ir. H. Sudirman, Mpi & Prof. DR. Ir. Achmad Mellawa $9.00
by Pandji Anoraga, S.E, M.M $7.00
by Bachrawi Sanusi, S.E $7.00
by Suryohadiprojo, Sayidiman $7.00
by Drs. H. Burhanuddin Salam, M.M $7.00
by C. Rollin Niswonger $12.00