by Adriyarkara $5.00
by Ir. M. Lies Suprapti $7.00
by WK $13.00
by M.E. Dicks $6.00
by $6.00
by Kartadjoemena, H.S $9.00
by Aziz Alimul $7.00
by Dr. Ir. M.M. Sri Setyati Harjadi $7.00
by Drs. Wishnubroto Widarso $5.00