. (191) [U.S. Geological Survey] Professional papers. Nos. 79, 80.Washington, DC,MLA Citation
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[U.S. Geological Survey] Professional papers. Nos. 79, 80. [electronic resource]
|Published:||Washington, DC, 1913|
United States congressional serial set ; serial set no. 6418
; 62nd Congress, no. 0
|Topics:||Professional Papers (U.S. Geological Survey)|