00450nam a22001457a 4500008004100000100001600041245008300057250001200140260003100152300002300183500005800206650001200264650001200276700001600288240129b           ||||| |||| 00| 0 eng d  aVerma, P.S.  aEnvironmental Biology :bprinciples of ecology /cP. S. Verma and V K Agarwal2  a2nd ed.  aNew DelhibS.Chandcc2021.  aviii, 591p.bills.  aincludes Glosary,bibliographical references and index  aEcology  aBiology  aV K Agarwal