TY  - GEN
AU  - Allen,D M
TI  - A device providing gradual transitions between light and dark periods in the animal room
SN  - 0023-6764
PY  - 1983///0623
KW  - Animals
KW  - Animals, Laboratory
KW  - Darkness
KW  - Housing, Animal
KW  - Light
KW  - Lighting
N1  - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S
ER  -