by Sayyid Quthb $9.00
by K.H. Anwar Sanusi $11.00
by Yusuf Abdullah Daghfag $6.00
by Ir. Daisy P. Sriyadi Hendaryono $6.00
by J. Donald Walters $5.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00