by Drs. Abdullah Ali, Drs. Misbandono, dan Ir. Eny Rahma $7.00
by Ir. Setijo Pitojo $6.00
by Wiratha $0.00
by Soekartawi, dkk $7.00
by Ir. Sumeru Ashari, M.A gr. Sc $7.00
by Joeniarto, S.H $7.00