00262nam a2200097Ia 4500008004100000082001900041100001800060245004100078260003700119300000800156140113s9999    xx            000 0 und d  a581.2(02)   G3  a"Heald, F.D."  aManual of plant diseases 2nd edition  a1933bMcGraw Hill BookcNew York  a953