%0 Journal Article %J Chemosphere %D 2004 %T Polycyclic aromatic hydrocarbons in the San Francisco Estuary water column: Sources, spatial distributions, and temporal trends (1993-2001) %A Ross, J. R. M. %A Oros, D. R. %B Chemosphere %P 909-920 %8 2004 %G eng %U http://www.sciencedirect.com/science?_ob=ArticleURL&_aset=B-WA-A-B-AZ-MsSAYZA-UUW-AAUUEEBDAA-AUEYCDVCAA-ZEZZAABBW-AZ-U&_rdoc=1&_fmt=summary&_udi=B6V74-4DFT1M1-6&_coverDate=11%2F01%2F2004&_cdi=5832&_orig=search&_st=13&_sort=d&view=c&_acct=C000050221&_versi