00383nam a2200145Ia 4500008004100000020001500041082001600056100001900072245003500091260004300126300000800169650002300177650001800200653001900218170901s1969    xx            000 0 und d  a0471937525  a581.2bW39I  aWheeler,B.E.J. 0aIntroduction to Plant Diseases  aLondonbJohn Wiley and Sons Ltd.c1969  a374  aBotanical sciences  aPure Sciences  aPlant diseases