by Segundo Galilea $6.00
by Ir. Adiwarman Karim, SE, MBA, MAEP $7.00
by J. F. Dumanauw $7.00
by Shaleh Tamimi $5.00
by Suharso, A.S.P $9.00
by Muhammad Chirzin $5.00
by Edmund Woga, CSsR. $7.00
by WK $16.00
by WK $13.00
by Surawan Martinus $24.00
by - $13.00
by R. Soeroso, S. H. $12.00