00390nam a2200157Ia 4500008004100000020000900041035001000050082002100060100003400081245005000115250000600165260004000171300000900211500000600220650000600226210723s9999||||xx |||||||||||||| ||und||  aNULL  a38589  a581.5BVER / AGA  aVerma, P. S. / Agarwal, V. K. 0aEnvironmental Biology : Principles Of Ecology  a-  aN. DelhibS. Chand and Company Ltd.  aNULL  a0  a-