?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=R&rft.au=Velusamy%2C+R&rft.aulast=Velusamy&rft.date=1983&rft.title=Techniques+to+evaluate+levels+of+resistance+in+rice+to+brown+planthopper+Nilaparavata+lugens+(Stal.)&rft.genre=proceeding