by Ir. Hatta Sunanta, B.Sc., MS $5.00
by Ir. Yudo Sudarto SP $5.00
by Rumah Sakit Persahabatan $7.00
by Ir. Setijo Pitojo $7.00
by Ir. Setijo Pitojo $6.00
by Ir. Sumeru Ashari, M.A gr. Sc $7.00