by WK $12.00
by Ir. H. Sudirman, Mpi & Prof. DR. Ir. Achmad Mellawa $9.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by P. Efrem Zuba, CSsR. $3.00
by Pradipta $11.00
by Sutarni M. Soerjowinoto $6.00
by F. Suryatmo $7.00
by O. Solihin $6.00
by Lilyana $9.00
by Anand Krishna $7.00
by Djarani, E.M. $9.00
by Ramlan Ginting $9.00