Onanong Prombut. (2000) The efficiency of neodymium-iron-boron magnet as a retention unit after casting process. Mahidol University,:ม.ป.ท.Onanong Prombut. 2000. The efficiency of neodymium-iron-boron magnet as a retention unit after casting process. ม.ป.ท.:Mahidol University,;Onanong Prombut. The efficiency of neodymium-iron-boron magnet as a retention unit after casting process. ม.ป.ท.:Mahidol University, 2000. Print.