00428nam a2200097Ia 4500008004100000082004600041100005100087245014800138260003600286300000800322140113s9999    xx            000 0 und d  a"632.4:581.43:631.46""1968""(082.2)   L0"  a"Tourroun,T.A., Bega,R.V. & Nelron, P.E., Ed."  aInternational Symposium on factors determining the behaviour of plant pathogens in soil : Proceedings of Root diseases and soil-borne pathogens  a1970bCalifornia press cLondon  a251