by WK $13.00
by WK $12.00
by Nursalam $7.00
by Raldi Artono $18.00
by Fajar Junaedi $9.00
by R. Soegeng $16.00
by H. Sudiarto & Zaeni Asyhadie $7.00
by Darmawijaya, St., Pr. $3.00
by Ir. Abbas Siregar Djarijah $5.00
by Ir. H. Rahmat Rukmana, MBA $5.00
by Prof. Dr. Kees Bertens, MSC $13.00
by Suhrawardi K. Lubis, S. H. $9.00