TY - BOOK AU - Natural Heritage According to UNESCO TI - Book of Nature : the Natural Heritage According to UNESCO SN - 3-89944-540-4 U1 - 503 PY - 2009/// PB - Natural Heritage According to UNESCO N1 - Natural Heritage According to UNESCO: Book of Nature : the Natural Heritage According to UNESCO. Natural Heritage According to UNESCO, 2009. 3-89944-540-4--(503NAT) ER -