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2
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Discover Magazine [videorecording] : How big is my universe? / presented by Assigment Discovery.
- 523.2
- Discovery Education,
- c1999.
- Silver Spring, MD :
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Extreme engineering [videorecording] / produced by Powderhouse Productions for Discovery Channel ; produced by Chris Schmidt ; written by Ed Fields, Alan Lindgren.
- 620
- Discovery Channel ; Distributed by Prime Picture,
- c2006.
- Silver Spring, MD :