00434nam a2200133Ia 4500008004100000082002600041100002500067245007200092260002400164300001000188600002500198600002500223650005200248140113s9999    xx            000 0 und d  a631.46:631.95(100) K5  a" Baker, Kenneth F."  aEcology of soil-borne plant pathogens:prelude to biological control  b"John Murray, 1965"  a571p.  a"Snyder, William C."  a"Snyder, William C."  aBiological control ; Soil borne plant pathogens