http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Giáo trình thể hiện các vấn đề lý thuyết và thực hành của việc nuôi lợn ở trang trại sách được biên soạn dựa trên các kiến thức mới về nhân giống, dinh dưỡng và kỹ thuật chăn nuôi lợn
Nguyễn Thanh Sơn ; Nguyễn Quế Côi