File:Hydrogen maser.gif

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:51, 25 June 2009		530 × 694 (206 KB)	Giovanni-P	{{Information \|Description={{en\|Retrieved at [http://horology.jpl.nasa.gov/h_maser.html http://horology.jpl.nasa.gov/h_maser.html] by 21:59, 9 December 2005 (UTC)}} \|Source=Transferred from [http://en.wikipedia.org en.wikipedia] \|Date={{Date\|2005\|12\|09}}

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