by Dr. E.G. Brahmaputra Marjadi, M.P.H $7.00
by K. Bertens $7.00
by Ir. Hieronymus Budi Santoso $5.00
by Dr. H. Abuddin Nata, MA $7.00
by H. Rahmat Rukmana $6.00
by Dra. Kumara Poespo $12.00