000			00558nam a2200217Ia 4500
008			160330s9999||||xx |||||||||||||| ||und||
020			_a0-7069-2248-4
040			_aCentral Library-NITS
041			_aEnglish
082			_a577 _bKUM
100			_aKumar, H. D.
245			_aModern concept of ecology _cby H. D. Kumar
250			_a5th ed.
260			_aNew Delhi _bVikas _c1983
300			_ax, 293p. :ill.
500			_aIncludes bibliographical references and index.
650			_aAir pollutions
650			_aEcology
650			_aEcosystem
942			_cBK
999			_c4574 _d4574