by H. Rahmat Rukmana $5.00
by Ir. Indro Purwono $6.00
by PIKA $12.00
by Ir. Abbas Siregar Djarijah $6.00
by Ir. M. Lies Suprapti $5.00
by Kemas Ali Hanafiah $9.00
by DAVE BARRY & RIDLEY PEARSON $13.00