by Walter Nicholson $11.00
by Thomas R. Baechle $9.00
by A. Rahman I Doi $5.00
by Ir. Setijo Pitojo $6.00
by Hutabarat, Sahala & Evans, Stewart M $5.00
by Ir. Juhaeni Radi $6.00
by Drs. Amin Widjaja Tunggal, Ak., M.B.A $7.00