TY  - RPRT
TI  - Secondary generalization and categorization in pigeons.
AU  - R S Bhatt
AU  - E A Wasserman
PY  - 1989
DO  - 10.1901/jeab.1989.52-213
UR  - https://pubmed.ncbi.nlm.nih.gov/16812595/
ID  - 16812595
ER  -