by Dr. William Hendricks $6.00
by Loyniwati Kho $6.00
by Drs. H. Abu Ahmadi $11.00
by Wahyu Qamara Mugnisjah & Asep Setiawan $7.00
by Ir. Indriyanto $9.00
by Ko Nomura, Latifah Hendarti $9.00