003560000a22001210004500060000800000082001400008100002600022245004200048260004500090260000900135300000800144650008200152  a100  a632.7 LEA  aLeach, Julian Gilbert  aInsect transmission of plant diseases  aNew York, Mc Graw- Hill Book Company Inc  c1940  a615  aPlant diseases - insect transmission/ plant pathology/ mites - plant diseases