by H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM $6.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00
by ISEI $18.00
by Syam Hardy $7.00
by WK $11.00
by John H. Hampsch, C.M.F. $6.00
by $40.00
by Kansil C.S.T $12.00
by Drs. SK. Bonar $7.00
by Brooks $18.00