by Edy Soatanto, N, BE $5.00
by Thabrani, Seno Adjie $11.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by WK $13.00
by Drs. S. Abdul Wahab $7.00
by Tom R. Burns $6.00
by Hayatinufus A.L. Tobing $9.00