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Content 50 pages, 7 subcats, 0 files, 490 nested pages
Main page Built environment
Top page Vermicompost (35,250)

Cities are large urban agglomerations - and are one of the largest, most complex systems ever developed by humans. See Sustainable cities for ideas on Appropedia about making cities more sustainable.

Subcategories

This category has the following 7 subcategories, out of 7 total.

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