Nutaya Hunwattanakul. (1989) Studies on Karyotype of some species of Dacus in Thailand. Mahidol University,:ม.ป.ท.Nutaya Hunwattanakul. 1989. Studies on Karyotype of some species of Dacus in Thailand. ม.ป.ท.:Mahidol University,;Nutaya Hunwattanakul. Studies on Karyotype of some species of Dacus in Thailand. ม.ป.ท.:Mahidol University, 1989. Print.