by Oren L. Justice dan Louis N. Bass $11.00
by Ir. Hieronymus Budi Santoso $5.00
by Ir. Setijo Pitojo $7.00
by Drs. G. Kartasapoetra., dkk $9.00
by $12.00
by Drs. Sudarsono, S.H., M.Si, dkk $11.00
by RW. Allard $11.00