@book{OPUS4-709, title = {Sustainable tourism and European policies}, editor = {Barbara Engels}, publisher = {Deutschland / Bundesamt f{\"u}r Naturschutz}, address = {Bonn}, organization = {Bundesamt f{\"u}r Naturschutz}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:b219-7095}, pages = {102 Seiten}, year = {2003}, language = {en} }