@book{HartjeKlaphakeSchliep2003, author = {Volkmar Hartje and Axel Klaphake and Rainer Schliep}, title = {The international debate on the ecosystem approach}, publisher = {Deutschland / Bundesamt f{\"u}r Naturschutz}, address = {Bonn}, organization = {Bundesamt f{\"u}r Naturschutz}, url = {https://nbn-resolving.org/urn:nbn:de:hbz:b219-6987}, pages = {50 Seiten}, year = {2003}, language = {en} }