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Bag Snaggers (Popularity: )
A tool for arborists and urban tree pruners for removing plastic bags and other debris ...
Category: Science\Agriculture\Forestry\Arboriculture
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Highway Bridges: A Northern California Sampler (Popularity: )
Article on the history of California bridges by Jill Livingston, published in the Society for ...
Category: Science\Technology\Structural Engineering\Bridge
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NOVA: Electric Heart (Popularity: )
Learn about the human heart and how it works, artificial body parts, and the quest ...
Category: Science\Medical Science\Anatomy
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Covered Bridges of Michigan (Popularity: )
Gallery and history of the few remaining covered bridges in the state.
Category: Science\Technology\Structural Engineering\Bridge
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