00423nam a2200145Ia 4500008004100000082001600041100001800057245005400075260004200129300000700171650004100178650003400219653001200253653001200265170901s1957    xx            000 0 und d  a632.8bB85I  aBroadbent, L. 0aInvestigation of Virus Diseases of Brassica Crops  aCambridgebThe University Pressc1957  a94  aAgriculture and related technologies  aTechnology (Applied sciences)  aMustard  aViruses