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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/30407063 Title: The effect of light intensity and day length on reproduction in the English sparrow. Author: George A Bartholomew Publisher: Cambridge, The Museum, 1949. OCLC:30407063

  
  

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Subjects

• English sparrow -- Reproduction -- Effect of light on.
• Photoperiodism.

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The effect of light intensity and day length on reproduction in the English sparrow.