00349nam a2200121Ia 4500008004100000040001700041082002500058100001500083245007000098260003000168300001500198650001400213190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta301.151bS131V  aSahay, B N 0aVikas mein prayogvadbmanav vigyan ka vyavharik prayogcB N Sahay  aNew DelhibBookhivec1972  axiv, 152p.  aSociology