Shyam, Shilpa . Air pollution and it`s impact on plant growth / by Shilpa Shyam, H.N. Verma and S.K. Bhargava. - New Delhi : New India Publishing Agency , 2006 - 249p : ISBN: 81-8942210-3 Subjects--Topical Terms: Air pollution, Factors in plant growth Dewey Class. No.: I148OaE1981 / P6