by PK Poerwantana $9.00
by Fathurin Zein $9.00
by Layman Tower Sargent $9.00
by J. Price Gittinger $6.00
by Prof. Drs. H. Lili M. Sadeli, M.Pd & Drs. H. Bedjo Siswanto, M.Si $9.00
by Ir. Doli Siregar, M.Sc., FRICS., SVC $11.00