?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J+H&rft.au=Williams%2C+J+H&rft.aulast=Williams&rft.atitle=Crop+Physiological+Factors+Influencing+Groundnut+Productivity&rft.title=Crop+Physiology&rft.date=1983&rft.volume=1&rft.pages=1-35&rft.genre=article