by Ir. Setijo Pitojo $9.00
by Ir. Bambang Cahyono $5.00
by $7.00
by Dr. E.G. Brahmaputra Marjadi, M.P.H $7.00
by Subba Rao, N.S $7.00
by Dr. Beate Jakob, Dr. Cristoph Benn & Dr. Erlinda Senturias $7.00