Eskeland, B. Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming. As Norbok etc.: 1977 20 p. : ill.
Eskeland, B. Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming. As Norbok etc.: 1977 20 p. : ill.
Eskeland, B. (1977) Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming, As Norbok etc.: 20 p. : ill.
Eskeland, B. (1977). Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming. As Norbok etc.: 20 p. : ill.
Eskeland B. Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming. As Norbok etc.: 1977. p. 20 p. : ill.
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