00355nam a2200121 a 450000500170000008200150001710000180003210000200005024500420007026000560011230000230016863000420019120251203091154.0  a378.2bNAT  aNatarajan, V.  aGunaskearan, K.  aScaling TechniquesbWhat, Why and How  aNew DelhibAssociation of Indian Universitiesc1986  a216 p.b24 cm.cPB  aScaling techniques - Research methods