by R. Soegeng $16.00
by C. Rollin Niswonger $13.00
by Ir. Hieronymus Budi Santoso $5.00
by Ir. Heinz Frick $6.00
by Ir. M. Lies Suprapti $7.00
by WK $11.00
by Niels Mulder $7.00
by Fairhurst, Michael C $6.00
by Drs. Ajat Sudrajat $7.00
by Drs. CST. Kansil, S.H $12.00
by Ir. Hieronymus Budi Santoso $6.00
by Ny. Lim $9.00