00399nam a2200157Ia 4500008004100000020001500041082001800056100001900074245003400093260003100127300000800158650002300166650001800189653001900207700001500226170901s1976    xx            000 0 und d  a0306356104  a581.232bW71S  aWood, R. K. S. 0aSpecificity in Plant Diseases  aLondonbPlenum Pressc1976  a354  aBotanical sciences  aPure Sciences  aPlant diseases  aGraiti, A.