by Kenneth Baker $7.00
by S. Soegijanto $11.00
by Prof. Sarbini Sumawinata $11.00
by Dr. Said Kelana & Dr. Chandra W $12.00
by ILT Learning $5.00
by Anand Krishna $11.00
by Roger Leroy $16.00
by Nenden Kirana $6.00
by Ny. Lim $9.00
by Hiro Tugiman $6.00
by Dandang A.D, Drs. $8.00