00313nam a2200097Ia 4500008004100000082002600041100002400067245006400091260005300155300000700208140113s9999    xx            000 0 und d  a632.485.1:633.15   K3  a"Christensen, J.J."  aCorn Smut caused by ustilago maydis (A.P.S. Monograph no.2)  a1963bAmerican Phytopathological Soc.cMinesotta  a41