00435nam a22001457a 4500003000400000008004100004082001800045100001600063245003500079260004500114300000800159942001200167999001700179952009300196OSt230612b        |||||||| |||| 00| 0 eng d  a519.5bEXT265  aHagen, E.E.  aOn The Theory of Social Change  aVakils FefferbIAB Books, Calcuttac1962  a158  2ddccBK  c27405d27405  00102ddc4070aRAUbRAUd2023-06-12l0o519.5 EXT265p3246r2023-06-12w2023-06-12yBK