000 00789 a2200241 4500
005 20250513004855.0
264 0 _c19830623
008 198306s 0 0 eng d
022 _a0023-6764
040 _aNLM
_beng
_cNLM
100 1 _aAllen, D M
245 0 0 _aA device providing gradual transitions between light and dark periods in the animal room.
_h[electronic resource]
260 _bLaboratory animal science
_cApr 1980
300 _a252-4 p.
_bdigital
500 _aPublication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.
650 0 4 _aAnimals
650 0 4 _aAnimals, Laboratory
650 0 4 _aDarkness
650 0 4 _aHousing, Animal
650 0 4 _aLight
650 0 4 _aLighting
773 0 _tLaboratory animal science
_gvol. 30
_gno. 2 Pt 1
_gp. 252-4
999 _c7052030
_d7052030