pubs.usgs.gov · u.s. u.s. department of the interior geological survey 3.2 2.9 2.0 9.6 • is.o...
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- pubs.usgs.gov · u.s. u.s. department of the interior geological survey 3.2 2.9 2.0 9.6 • is.o 3.9 • 9.0 read- 3.0 • 2.8 2.4 • 2.6 3.9 te.6 3.6 3.0 b.g
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