by Agus Pambagio $3.84
by Chandrakirana, Kamala, Isono Sadoko $7.00
by Colin Coulson - Thomas $9.00
by Ir. Doli Siregar, M.Sc., FRICS., SVC $11.00
by Sartono Kartodirdjo $12.00
by Arifin Pasaribu $5.57