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2. Civic greening and environmental learning in public-access community gardens in Berlin;Bendt;Landsc. Urban Plan.,2013
3. Reinstating the roles and places for productive growing in cities;Bhatt,2008
4. The use of volunteer initiatives in conducting urban forest resource inventories;Bloniarz;J. Arboric.,1996
5. Report of the World Commission on Environment and Development: Our Common Future;Brundtland,1987