by Ir. Heinz Frick & Ch. Koesmartadi $6.00
by H. Rahmat Rukmana $6.00
by Ir. Hieronymus Budi Santoso $5.00
by A. Eddy Kristiyanto, OFM $7.00
by Suharso, A.S.P $9.00
by Ir. Abbas Siregar Djarijah $5.00