http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Kỷ yếu hội thảo vùng đệm các khu bảo tồn thiên nhiên Việt Nam: Chương trình nghiên cứu Việt Nam - Hà Lan (VNRP)
environmental protection,natural resources