Kalpana Sastry, R.Ghai, S.K.George V. ThomasRohini Iyer2014-07-252014-07-251986Kisan World 1986 v-13 i-8 p-43http://hdl.handle.net/123456789/4402enRole of biotic agents Instead of physical and chemical means biotic control offers effective strategy against plant diseasesArticle