by K. Usman $5.00
by Prof. Dr. Sudarwan Danim $11.00
by Ir. Suharto $9.00
by Julius R. Latumaerissa, S.E., M.M $7.00
by H. Abu Daud Busroh, S.H $9.00
by Dr. Eti Rochaety, dkk $9.00