by Rani Anggraeni $12.00
by Ir. Moehar Daniel, M.S & Ir. Darmawati, M.Sc & Ir. Nieldalina, M.Si $7.00
by Pandji Anoraga, S.E, M.M $9.00
by Robert E. Baldwin $7.00
by Adi Suryadi Culia $7.00
by Anthony P.W $6.00
