TY  - GEN
AU  - HOFFMAN,H S
TI  - A RETRACTABLE LEVER FOR USE IN BEHAVIORAL RESEARCH
SN  - 0022-5002
PY  - 1996///1201
KW  - Animals
KW  - Behavior, Animal
KW  - Behavioral Research
KW  - Equipment and Supplies
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1901/jeab.1964.7-163
ER  -