Combs, May E., authorDyar, Elizabeth, advisorBirky, C. W., committee memberGustafson, Dagmar C., committee memberGuard, Harris T., committee memberBowman, Ferne, committee member2019-07-262019-07-261949https://hdl.handle.net/10217/195984Covers not scanned.To view the abstract, please see the full text of the document.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.Old ageDietText