by Nursalam $7.00
by Cucu Cahyana & Yeni Ismayani $9.00
by Hadi Podo & Joseph J. Sullivan $43.00
by - $12.00
by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00