by Ir. Hieronymus Budi Santoso $5.00
by Howard Clinebell $13.00
by Ir. Mul Muyani Sutedjo $7.00
by Ir. Bambang Cahyono $6.00
by Ir. Mul Muyani Sutedjo $6.00
by Wiranda dan G. Piliang Soewondo Djojosoebagio $7.00