?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Block%2C+J.C.&rft.aulast=Block&rft.aufirst=J.C.&rft.date=1997&rft.isbn=0-900386-57-6&rft.title=Biodiversity+in+drinking+water+distribution+systems%3Aa+brief+review&rft.btitle=The+microbiological+quality+of+water&rft.genre=bookitem