Owls of the West: Their Ecology and Conservation ; Published by the  ;National Audubon Society, Tiburon, October 1979. Softcover. 97 pp. 8.5" x 11". Illustrated in b+w. Very Good Condition. ; Please examine photos closely . Light wear, aging, soiling to covers, stray mark at front center right . ; Binding is firm.  ; Small greyish marks at fore edge of a few pp. -- perhaps caused during printing process; o/w interior is clean, free of markings. $5.00 USPS media mail shipping. Please ask any questions before purchase. All sales are final. Thanks!