pubs.usgs.gov · -2000 BM 1416 us Qsg us gr DBM 2688' BULLETIN 989 PLATE 7 143040' 144000' 64000'...

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Transcript of pubs.usgs.gov · -2000 BM 1416 us Qsg us gr DBM 2688' BULLETIN 989 PLATE 7 143040' 144000' 64000'...