Mattana Srikrachang. (2003) Conservation and management of elephant in Thailand. Mahidol University,:ม.ป.ท.Mattana Srikrachang. 2003. Conservation and management of elephant in Thailand. ม.ป.ท.:Mahidol University,;Mattana Srikrachang. Conservation and management of elephant in Thailand. ม.ป.ท.:Mahidol University, 2003. Print.