killer bears bear attacks

Killer bears,  Mike Cramond,  Scribners 1981, hardcover , dust jacket, 300 pages, bear attacks and stats.  20$u.s. add all                     Bear attacks , Stephen Herrero,  Hertig 1985,  softcover 285 pages, illustrated.  causes and avoidance  ,  20$ u.s. add all,       40$cnd  plus shipping