00493nam a22001697a 4500003000400000008004100004020001500045082001700060100002100077245005600098250001300154260007800167300001500245650002400260650001900284650002000303OSt220825b        |||||||| |||| 00| 0 eng d  a0471937525  a632.3 bW56I  aWheeler, B.E.J.   aAn introduction to plant diseases/by B.E.J. Wheeler  a1st. ed.  aLondon:bThe English Language Book Society &  John Wiley and Sons,c1979.  aix, 373 p.  aBotanical sciences   aPure Sciences   aPlant pathology