ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] Four groups, each of 150 Rhode Island Red x Light Sussex pullets hatched on December 4, 1957, were reared under identical conditions except for light treatments as follows. Two groups served as controls and received natural daylight only (latitude, 51 27 N.) : the other two groups were given ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1821522a0
Permalink