?url_ver=Z39.88-2004&rft_id=doi%3A10.1068%2Fa151669&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Hyman%2C+G.M.&rft.aulast=Hyman&rft.aufirst=G.M.&rft.issue=12&rft.volume=15&rft.date=May+1983&rft.issn=0308-518X&rft.atitle=On+the+geometry+of+emergency+service+medical+provision+in+cities&rft.title=Environment+and+Planning+A&rft.pages=1669-1690&rft.genre=article