00267nam a22001097a 4500003000400000008004100004082001700045100001700062245003100079260003900110300000800149OSt230531b        |||||||| |||| 00| 0 eng d  a641.4bPP138  aWalker, J.C.  aDisease of Vegetable Crops  aMcGraw HillbB.L. Jain, Agrac1952  a529