00472cam a2200157u  4500008004100000100002400041245006800065260004800133300003300181500001800214500004000232650001500272003000100287005001700288040000900305                                          aMitchell G. Duncan.00aSociology :bthe study of social systems /cG. Duncan Mitchell.  aLondon :bUniversity Tutorial Press,c1959.  aix, 174 p. :bill. ;c22 cm.  aIncudes index  aInclude bibliographical references. 0aSociology.20230123134505.0  cNUST