Skipp, Betty,  1928- <br/><br/>
The Maudlow and Sedan Formations of the Upper Cretaceous Livingston Group on the west edge of the Crazy Mountains Basin, Montana / 
by Betty Skipp and L. W. McGrew 
 - Washington, D.C :  United States Government Printing Office,  1977 
 - iv, 68 p. :  ill. ;  23 cm. 
 - Contributions to stratigraphy Geological Survey bulletin ;  1422-B .
<br/><br/>Bibliography: p. 66-68 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Cretaceous<br/>Volcanic ash, tuff, etc.--Montana--Crazy Mountains<br/>Geology--Montana--Crazy Mountains<br/>Geology--Survey--Montana
<br/><br/><label>Dewey Class. No.: </label>551.77