?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K+K&rft.au=Sharma%2C+K+K&rft.aulast=Sharma&rft.atitle=Histological+aspects+of+in+vitro+root+and+shoot+differentiation+from+cotyledon+explants+of+Brassica+juncea+(L.)+czern&rft.title=Plant+Science&rft.issn=0168-9452&rft.date=1990&rft.volume=69&rft.pages=207-214&rft.issue=2&rft.genre=article