by DR. Ir. Hj. Tati Nurmala, S.W
$6.00

by Drs. Sudarsono, S.H., M.Si
$11.00

by Dennis L. Poster
$9.00

by Paul I. Wellman
$16.00

by Lyle W. Morgan II, Ph.D., HMD
$7.00

by Drs. Husein Umar, S.E., M.M., MBA
$13.00