by Ir. Mul Muyani Sutedjo $12.00
by Kusumoputro, Sidiarto dkk $9.00
by Ir. Suprio Guntoro $6.00
by Santoso, Loekito $6.00
by Don WS, Cherry Hadipraja $13.00
by Gordon, Gibson G. dan Paul Skett $7.00
by Prof. Mr. Dr. Sudargo Gautama $6.00
by Prof. R. Soebekti, S.H. $6.00
by Dra. Nurul Zuriah, M.Si $11.00
by Drs. Sindu Galba $6.00
by - $6.00
by Mark Sommer $6.00