00428nam a2200133Ia 4500008004100000040004400041050001100085100001900096245007700115260003400192300001600226500004000242650001200282           1942nyua   df    a  1  aengdc  aAhmadu Bello University Library - Zaria  aQL 751  aElton, Charles 0aVoles, mice and lemmings: problems in population dynamicscCharles Elton  aOxfordbClarendon Pressc1942  a496p.: ill.  aIncludes bibliographical references  aZoology