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Effect of perches in laying cages on welfare and production of hens
Duncan, E.T., Appleby, M. C., Hughes, B. O.Volume:
33
Language:
english
Journal:
British Poultry Science
DOI:
10.1080/00071669208417441
Date:
March, 1992
File:
PDF, 2.55 MB
english, 1992