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200 10$aWhen biospheres collide $ea history of NASA's planetary protection programs /$fby Michael Meltzer
210  1$a[Place of publication not identified] :$cNASA,$d[2012]
210  4$dİ[2012]
215   $a1 online resource (426 pages) $cillustrations (some color)
225 1 $aNASA History Series
311   $a0-16-085327-3 
320   $aIncludes bibliographical references at the end of each chapters and index.
410  0$aNASA history series.
606   $aSpace pollution
606   $aSpace environment
606   $aEnvironmental protection$xMoral and ethical aspects
607   $aOuter space$xExploration$xEnvironmental aspects
608   $aElectronic books.
615  0$aSpace pollution.
615  0$aSpace environment.
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700   $aMeltzer$b Michael$f1946-$0979659
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200 10$aDesign, fabrication, and delivery of a miniature Cassegrainian concentrator solar array system$b[electronic resource] $efinal technical report /$fprepared by Mark A. Kruer
210  1$aRedondo Beach, CA :$cEngineering and Test Division, TRW Space & Technology Group ;$aHuntsville, AL :$cMarshall Space Flight Center, National Aeronautics and Space Administration,$d[1987]
215   $a1 volume
225 1 $aNASA CR ;$v179237
300   $aTitle from title screen (viewed May 5, 2009)
517   $aDesign, fabrication, and delivery of a miniature Cassegrainian concentrator solar array system 
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606   $aManufacturing$2nasat
606   $aSolar collectors$2nasat
606   $aStructural design$2nasat
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615  7$aDesign analysis.
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615  7$aSolar collectors.
615  7$aStructural design.
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712 02$aGeorge C. Marshall Space Flight Center.
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