Khampee Pattanatanang. (1994) Knowledge and perception of dog owners towards practice of dog contraception. Mahidol University,:ม.ป.ท.Khampee Pattanatanang. 1994. Knowledge and perception of dog owners towards practice of dog contraception. ม.ป.ท.:Mahidol University,;Khampee Pattanatanang. Knowledge and perception of dog owners towards practice of dog contraception. ม.ป.ท.:Mahidol University, 1994. Print.