by Ir. Abbas Siregar Djarijah $6.00
by Th. Aq. M. Rochadi Widagdo, Pr. $6.00
by Emanuel Gerrit Singgih, Ph.D. $7.00
by H. Rahmat Rukmana $6.00
by Dr. Ir. Muhammad Rasyaf, MS $6.00
by Anung Handoko $7.00
by $7.00
by Gauzali Saydam $9.00
by Muhaimin $9.00
by Reka Rio $0.00
by Prof. Subowo, dr. M.Sc., Ph.D $9.00
by Harmanto Edy Jatmiko $7.00