by E. Martasudjita, Pr. $3.00
by Ir. Hieronymus Budi Santoso $5.00
by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Suharso, A.S.P $6.00
by Anung Handoko $7.00
by Don WS, Cherry Hadibroto $7.00