TY - BOOK ID - 133552228 TI - The herring gull's world : a study of the social behaviour of birds PY - 1953 PB - London : Collins, DB - UniCat KW - Herring-gull KW - Birds KW - Habits and behavior UR - https://www.unicat.be/uniCat?func=search&query=sysid:133552228 AB - ER -