by Slamet Soeseno $5.00
by ISEI $13.00
by Idries Shah $8.00
by Ir. Hieronymus Budi Santoso $5.00
by Petrus Suparyanto, FIC $7.00
by Ir. Daisy P. Sriyadi Hendaryono $6.00
by Ir. Nur Tjahjadi $5.00