by Tanenbaum $16.00
by Soetomo Wongsotijtro $12.00
by DM. Etter, Terj. Drs. Kusuma Wiraman $13.00
by WK $12.00
by Drs. H. Moh. Pabundu Tika, M.M $7.00
by WK $11.00
by Dr. Ibrahim Mulaakhathir $6.00
by - $5.00