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United States. National Park Service
[1]Condensed from “A Geologic and Geographic Sketch of Zion National Park” by Herbert E. Gregory.

For sale by the Superintendent of Documents, Government Printing Office, Washington 25, D. C.—Price $3.75 per 100 copies

U. S. GOVERNMENT PRINTING OFFICE
REPRINT 1951 O-F—933840

                                                                                                                                                                                                                                                                                                           

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