TY  - BOOK
AU  - Hill,Jennifer
AU  - Gale,Tim
TI  - Ecotourism and environmental sustainability: principles and practice 
U1  - 910.684 
PY  - 2009///
CY  - Farnham, England, Burlington, VT
PB  - Ashgate
KW  - Ecotourism
N1  - Includes bibliographical references and index
UR  - http://www.columbia.edu/cgi-bin/cul/resolve?clio7884492
ER  -