http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Diễn đàn khuyến nông @ nông nghiệp lần thứ 4 - 2012
Chuyền đề : Phát triển cây có múi bền vững
Citrus tree planting,Kỹ thuật trồng cây có múi