?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Lutz%2C+W.&rft.aulast=Lutz&rft.aufirst=W.&rft.date=1996&rft.title=Challenges+for+studying+population-environment+interactions+in+the+Arab+region&rft.genre=proceeding