by E. Martasudjita, Pr. $3.00
by Suharso, A.S.P $6.00
by Ir. Ari Wijayani Purwanto $0.00
by dr. Pantjita Hardjasasmita (Alm) $6.00
by Aziz Alimul $9.00
by Ir. M. Lies Suprapti $9.00