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1
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2Published 1994Government Document Book
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3
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4
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5
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6
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7Published 1995Government Document Microform Book
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8
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9Published 1998Government Document Microform Book
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10by Ryder, Robert T.List of USGS open-file reports by year from which a link may be made to the title desired
Published 1998
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11
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12Published 1997Government Document Microform Book
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13
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14
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15
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16
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17
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18Published 1998Government Document Microform Book
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19
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20Published 1999Government Document Book