by Ir. Eddy Afrianto & Ir. Evi Liviawaty $7.00
by Drs. Abdul Chaer $13.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Duncan Mitchel $9.00
by $9.00
by Kusno Budi Santoso dan S. Ary Soewendo $11.00