Perry, G.C Welfare of the laying hen - Oxforshire CABI Pub. 2004 - xiv,430 p. - Poultry Science Symposium Series 27 . ISBN: 0851998135 Subjects--Topical Terms: AgricultureAnimal HusbandryANIMAL WELFAREHensPOULTRY SCIENCE Dewey Class. No.: 636.5 / WEL