by Bernard Bloch $6.00
by Kartohoesodo, Soehardo $7.00
by Soedarmo, Sumarmo Poorwo $6.00
by W.A.R. Thomson $6.00
by Prof. Hembing Wijayakusuma $7.00
by $7.00
by Dr. Al Rasyid, SpS, Dr. Lyna Soertidewi, SpS(K) $7.00