Orr, Elizabeth L. <br/><br/>
Oregon geology  [electronic resource] / 
Elizabeth L. and William N. Orr. 
 - 6th ed. 
 - Corvallis :  Oregon State University Press,  c2012. 
 - 304 p. :  ill., maps. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><br/>Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Oregon.<br/>Natural history--Oregon.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QE155  / .O775 2012 
<br/><br/><label>Dewey Class. No.: </label>557.95