by Sudradjat, S.E $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Drs. SK. Bonar $7.00
by Drs. A.W. Widjaja $6.00
by Tim MedPress $6.00
by Kosuke Mizuno, Indrasari Tjandraningsih, Rina Herawati $31.00