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USGS Online Publications Directory

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[PARENTDIR] Parent Directory - [   ] bul1969b_plate1.pdf 2015-07-17 19:09 22M [   ] bul1969b_plate2.pdf 2015-07-17 19:08 199K [   ] bul1969b_report.pdf 2015-07-20 15:30 2.0M

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