00364nam a2200157Ia 4500008004100000020000900041035001000050082002100060100002800081245002600109250000900135260003900144300000800183500000900191650000600200210723s9999||||xx |||||||||||||| ||und||  aNULL  a27551  a574.5BVER / AGA  aVerma,p.s./agarwal,v.k. 0aPrinciples Of Ecology  a1982  aN. DelhibSamaj Prabhodhan Sanstha  a228  a2399  a-