500 BC - Environmental Sustainability & Historical Context
| Name: | 500 BC - Environmental Sustainability & Historical Context |
| Category: | Reference |
| Description: | Age-old truths, common-sense ideas and no-bull eco-realities from Boris MacBoar combine for a fun, powerful guide to living green. Tips, forums, new facets of your heritate and the natural world. |
| URL: | http://500bc.com/  |
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