00293nam a2200121Ia 450000500170000000800410001704100080005808200160006610000180008224500250010026000380012530000080016320260720174534.0260720s2004    xx            000 0 und d  aeng  a311.22 REDR  aSingh, Yogish  aResearch methodology  aNew DelhibA P H Publishingc2004  a79p