TY - BOOK ID - 130425391 TI - The herring gull's world : a study of the social behavior of birds PY - 1967 PB - New York: Basic books, DB - UniCat KW - Herring gull KW - Social behavior in animals UR - https://www.unicat.be/uniCat?func=search&query=sysid:130425391 AB - ER -