00491nam a2200169Ia 4500008004100000082001600041100001900057245005800076260005000134300000800184650002300192650001800215653002300233653001900256700002300275700002300298170901s1967    xx            000 0 und d  a581.2bK28S  aKelman, Arthur 0aSourcebook of Laboratory Exercises in Plant Pathology  aSan FranciscobW.H. Freeman and Companyc1967  a387  aBotanical sciences  aPure Sciences  aLaboratory manuals  aPlant diseases  aBoothroyd, Carl W.  aDavis, Benjamin H.