by Fina Af'ldatussofa, dkk $6.00
by Denny J. A $6.00
by Ir. Rustam Hakim, M.T., IALI & Dr. Ing. Ir. Eka SediadiR., IAI $9.00
by Fathimah Usman $6.00
by Richard Weston $32.00
by $5.00