TY  - RPRT
TI  - Factors affecting conditional discrimination learning by pigeons.
AU  - D R Thomas
AU  - T Stengel
AU  - L Sherman
AU  - M Woodford
PY  - 1987
DO  - 10.1901/jeab.1987.48-277
UR  - https://pubmed.ncbi.nlm.nih.gov/16812493/
ID  - 16812493
ER  -