00367nam a2200145Ia 4500008004100000020001500041082001600056100002200072245003500094260002300129300000800152650002300160650001800183653002000201170901s1969    xx            000 0 und d  a0471937525  a581.2bW39I  aWheeler, B. E. J. 0aIntroduction to Plant Diseases  aLondonbELBSc1969  a374  aBotanical sciences  aPure Sciences  aPlant pathology