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<p>Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
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<br>Subjects: tlie; interior; exterior; scarp; enceinte; crest; feet; ditch; permanent; google elements; interior crest; scarp wall; exterior slope; exterior side; main ditch; interior crests; drawn parallel; principal lines; plunging fire</div>
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Dennis Hart Mahan</div>
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