00305nam a2200109Ia 4500008004100000082001500041100003300056245002900089260004900118300001000167650001800177140113s9999    xx            000 0 und d  a632(02) K3  a" Heald, Frederick Deforest"  aManual of plant diseases  b"New Delhi : Eurasia publishing house, 1963"  a953p.  aPlant disease