Hutchison, Frank T., authorThatcher, T. O. (Theodore Ossip), 1910-, committee memberWygant, Noel D., 1908-, committee memberYeager, Lee E., committee member2007-01-032007-01-031951http://hdl.handle.net/10217/80199To view the abstract, please see the full text of the document. Abstract is at the end of the document, pages 74-80.masters thesesengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.White pine weevilSpruce -- Diseases and pestsSpruce bark beetlesWoodpeckersText