http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách giới thiệu về nghề nuôi ong, đặc điểm của ong các kỹ thuật cơ bản của nghề nuôi ong cùng một số kỹ thuật mới cập nhật.