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Posted by on Thursday, November 17, 2011 at 8:07am.

What is the history of sonar

  • SCIENCE - , Thursday, November 17, 2011 at 8:15am

    suggest that you enter this question on Google; numerous sites appear from which you can choose regarding the history of sonar.

  • SCIENCE - , Thursday, November 17, 2011 at 9:10am

    The wikipedia page is good
    http://en.wikipedia.org/wiki/Sonar

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