?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=P+L&rft.au=Kumar%2C+P+L&rft.aulast=Kumar&rft.atitle=Assessment+of+variation+in+Aceria+cajani+using+analysis+of+rDNA+ITS+regions+and+scanning+electron+microscopy%3A+implications+for+the+variability+observed+in+host+plant+resistance+to+pigeonpea+sterility+mosaic+disease&rft.title=Annals+of+Applied+Biology&rft.date=2001&rft.volume=139&rft.pages=61-73&rft.issue=1&rft.genre=article