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- [3] The future housing of laying hens in cages BERICHTE UBER LANDWIRTSCHAFT, 2001, 79 (01): : 140 - 159
- [8] INFLUENCE OF GENOTYPE AND ENVIRONMENT ON LOCOMOTOR-ACTIVITY OF LAYING HENS IN CAGES ARCHIV FUR GEFLUGELKUNDE, 1978, 42 (04): : 159 - 166
- [10] EFFECTS OF A PERCH IN CONVENTIONAL CAGES FOR LAYING HENS ACTA AGRICULTURAE SCANDINAVICA, 1984, 34 (02): : 193 - 209