TY  - RPRT
TI  - Confinement, behavior and performance with examples from poultry.
AU  - P B Siegel
AU  - W B Gross
PY  - 1973
DO  - 10.2527/jas1973.372612x
UR  - https://pubmed.ncbi.nlm.nih.gov/4795914/
ID  - 4795914
ER  -