by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by H. Rahmat Rukmana $6.00
by Yves Brunsvick & Andre Danzin $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Soekartawi $9.00
by Ir. Hieronymus Budi Santoso $5.00