?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=McGonnell%2C+Imelda+Mary&rft.aufirst=Imelda+Mary&rft.aulast=McGonnell&rft.date=1998&rft.title=Fate+maps+and+gene+expression+in+normal+and+abnormal+facial+primordia+of+chick+embryos&rft.tpages=301&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral