Warfield, Ronald G. books & textbook
Crater Lake: The Story Behind the Scenery (Discover America: National Parks)
Ronald G. Warfield Lee Juillerat Larry Smith Peter C. Howorth K. C. DenDooven
KC Publications, Inc. /1982-08-03 Paperback / 48 Pages
isbn-10: 0916122794 / isbn-13: 9780916122799
A guide to Crater Lake: The mountain that used to be
Crater Lake Natural History Association /1985T Paperback / 48 Pages
isbn-10: 0933369018 / isbn-13: 9780933369016
