1. Factors affecting floor laying by domestic hens: a review;Appleby;Wld. Poult. Sci. J.,1984
2. Behaviour and productivity of the domestic pig in barren and enriched environments;Beattie,1993
3. Genetic influences on personality from infancy to adulthood;Goldsmith;Child Dev.,1983
4. Animal handling;Grandin;Food Anim. Pract.,1987
5. Environmental and genetic factors which contribute to handling problems at pork slaughter plants;Grandin,1993