TY  - RPRT
TI  - Free operant avoidance in rats under increased nitrogen pressures.
AU  - J R Thomas
AU  - L S Burch
PY  - 1975
DO  - 10.1037/h0076393
UR  - https://pubmed.ncbi.nlm.nih.gov/1150953/
ID  - 1150953
ER  -