00283nam a22001097a 4500003000400000008004100004082001600045100001600061245005000077250000800127260003800135OSt240521b        |||||||| |||| 00| 0 eng d  a581.2bS48I  aSingh, R.S.  aIntroduction to Principles of Plant Pathology  a3rd  aOxford, IBtt.bS.R.T.,Patnac1984