by Glynis M. Breakwell $7.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by V. Indra Sanjaya, Pr. $6.00
by Dr. Med. Udayana Gendo $7.00
by H. Rahmat Rukmana $6.00
by E. Martasudjita, Pr. $3.00