00473nam a2200169Ia 4500003000400000005001700004008004100021040000700062041000800069082002400077100003500101245007900136260004200215365001300257650001900270650001400289OSt20230516111444.0210423s1990    xx            000 0 und d  cAL  aeng  a305.5122 223bRAYB  aRAYAPPA (P H);MUTHARAYAPPA (R)  aBackwardness and welfare of scheduled castes and scheduled tribes in india  aPunjabbAshish Publishing Housec1990  b100cINR  aSocial Classes  aSociology