Weethima Visalvethaya. 2009. The development and evaluation of a model for artificial insemination by backyard pig farmers. Faculty of Veterinary Science, Chulalongkorn University;
Weethima Visalvethaya. (2009) The development and evaluation of a model for artificial insemination by backyard pig farmers . Chulalongkorn University/Bangkok.
Weethima Visalvethaya. The development and evaluation of a model for artificial insemination by backyard pig farmers. . Bangkok:Chulalongkorn University, 2009.
Weethima Visalvethaya. (2009) The development and evaluation of a model for artificial insemination by backyard pig farmers . Chulalongkorn University/Bangkok.