?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Fossey&rft.au=Fossey%2C+Stephen+John&rft.aufirst=Stephen+John&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral&rft.date=1990&rft.tpages=588&rft.title=The+diffuse+interstellar+features+and+interstellar+relationships