by American Asociation of State Highway and Transportation Officials
$9.00

by Fachruddin H.S
$7.00

by Thabrani
$13.00

by Drs. Amin Wijaja Tunggal, M.B.A
$7.00

by Dr. Soegeng Santoso, M.Pd dan Dra. Anne Lies Ranti., M.Pd
$9.00

by WK
$11.00