Kriyaporn Songmuaeng. (1994) Effects of vertebrate hormones and ovotestis homogenate on the reproductive system of Achatina fulica (Gastropoda : Stylommatophora). Mahidol University,:ม.ป.ท.Kriyaporn Songmuaeng. 1994. Effects of vertebrate hormones and ovotestis homogenate on the reproductive system of Achatina fulica (Gastropoda : Stylommatophora). ม.ป.ท.:Mahidol University,;Kriyaporn Songmuaeng. Effects of vertebrate hormones and ovotestis homogenate on the reproductive system of Achatina fulica (Gastropoda : Stylommatophora). ม.ป.ท.:Mahidol University, 1994. Print.