by Eko Pratomo $20.00
by Dr. Eti Rochaety, dkk $9.00
by Prof. Ir. Zoer'ani Djamal Irwan, M.Sc $9.00
by Salah Wahab $9.00
by Etty Indriati $6.00
by Prof. Yogianto Hartono, MBA $9.00