by H. Rahmat Rukmana $6.00
by John Kirvan $6.00
by C. Hanny Indraswari, SE $5.00
by J. Heinrich Arnold $4.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $6.00