by Ir. Hieronymus Budi Santoso & Tata S. $5.00
by Dra. Kumara Poespo $12.00
by Dr. Niels Mulder $11.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by Don WS, Cherry Hadibroto $13.00
by Dr. Al. Purwa Hadiwardoyo, MSF $6.00