Dry Creek Petrified Tree Environmental Education Area.
[Casper, Wyo.?] : U.S. Dept. of the Interior, Bureau of Land Management, Casper District Office, 
Petrified forests /
Petrified forests / Wyoming /
National environmental study areas > National environmental study areas / Wyoming > National environmental study areas / Wyoming / Buffalo Region.
Shipping list no.: 93-0440-P.
8 p. :
ill., map ;
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