Guardians of Ga'Hoole, Book Four

["Fantasy" "Fiction" "nyt:series_books=2010-09-05" "Owls" "New York Times bestseller" "Juvenile fiction" "Owls fiction" "Trees fiction" "War fiction" "Children's fiction" "Zhang pian xiao shuo" "Er tong wen xue" "Adventure and adventurers fiction" "Soren (Fictitious character)" "Gylfie (Fictitious character)" "Twilight (Fictitious character)" "Digger (Fictitious character)" "Tyto (Imaginary place)" "Good and evil" "Spanish language materials" "Buhos" "Novela juvenil" "Bien y mal" "Novela fant\u00e1stica" "Tyto (Imaginary place) -"]