?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Willekens%2C+F.&rft.aulast=Willekens&rft.aufirst=F.&rft.date=1995&rft.title=Demographic+trends+in+Russia&rft.btitle=Population+and+Family+in+the+Low+Countries+1994&rft.genre=bookitem