000			00467nam a2200169Ia 4500
999			_c75439 _d75439
005			20220616151436.0
008			180710s9999 xx 000 0 und d
041			_aEN
082			_a591.5 _bVER _223
100			_aVERMA, P.S.
245			_aPrinciples of ecology ( environmental biology) / _c[by] P.S.Verma
250			_a4th ed.
260			_aNew Delhi _bS.Chand _c1989
300			_aviii, 591 p.
500			_aIncludes glossary, bibliography and index.
942			_cR