Perdita (moon) 1970-01-01
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Portia (moon) 1970-01-01
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Butterfly valve 1970-01-01
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Duckbill valve 1970-01-01
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Endobronchial valve 1970-01-01
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Faucet aerator 1970-01-01
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Gate valve 1970-01-01
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Prospero (moon) 1970-01-01
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Regression validation 1970-01-01
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Subcloning 1970-01-01
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Sulfur assimilation 1970-01-01
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Superhelix 1970-01-01
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Top cap 1970-01-01
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Valve manufacturers 1970-01-01
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Video camera tube 1970-01-01
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Vintage amateur radio 1970-01-01
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Voltage reference 1970-01-01
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Wehnelt cylinder 1970-01-01
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Williamson amplifier 1970-01-01
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Phantastron 1970-01-01
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