by Dr. Niels Mulder $12.00
by Edy Soatanto, N, BE $5.00
by Drs. Daryanto $6.00
by Ir. R. Bambang Soelarso $6.00
by Ir. H. Rahmat Rukmana $6.00
by Ariesto Hadi $16.00
by $0.00
by Bharati Mukherjee $7.00
by Ir. Rudy Gunawan $6.00
by Hani Hendayani dan Amatullah Shafiyyah $6.00
by Clara Ng $6.00
by - $9.00