http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nội dung quyển sách là thống kê các yếu tố chính của quá trình sản xuất nông nghiệp. Thống kê trồng trọt, chăn nuôi, thống kê kết quả sản xuất nông nghiệp,...