pubs.usgs.govunited states department of the interior geological survey r 12 24 36 12 24 90 w. r. 90...
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pubs.usgs.govunited states department of the interior geological survey r 12 24 36 12 24 90 w. r. 90 w. 2730" 2730" 89 w. 19 30 19 r. 89 w. 1000 1000 (pole