00385nam a2200145Ia 4500008004100000082001600041100002000057245003200077260004600109300000800155650002300163650001800186653001700204653001800221170901s1961    xx            000 0 und d  a581.2bE79P  aEsau, Katherine 0aPlants, Viruses and Insects  aCambridgebHarvard University Pressc1961  a110  aBotanical sciences  aPure Sciences  aInsect pests  aPlant viruses