<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kelly, Erin N.</style></author><author><style face="normal" font="default" size="100%">Short, Jeffrey W.</style></author><author><style face="normal" font="default" size="100%">Schindler, David W.</style></author><author><style face="normal" font="default" size="100%">Hodson, Peter V.</style></author><author><style face="normal" font="default" size="100%">Mingsheng, Ma</style></author><author><style face="normal" font="default" size="100%">Kwan, Alvin K.</style></author><author><style face="normal" font="default" size="100%">Fortin, Barbra L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Oil sands development contributes polycyclic aromatic compounds to the Athabasca River and its tributaries</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.pnas.org/content/early/2009/12/04/0912050106.full.pdf+html?sid=0a3b2530-72fe-48e1-b0c6-5956d5d1d93f</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Proceedings of the National Academy of Sciences</style></publisher><volume><style face="normal" font="default" size="100%">106</style></volume><pages><style face="normal" font="default" size="100%">22346-22351</style></pages><language><style face="normal" font="default" size="100%">en</style></language><issue><style face="normal" font="default" size="100%">52</style></issue><notes><style face="normal" font="default" size="100%">PNAS. Proceedings of the National Academy of Sciences of the United States of America</style></notes><custom1><style face="normal" font="default" size="100%">Biology, Oil &amp; Other Non-renewable Fuels</style></custom1><custom2><style face="normal" font="default" size="100%">Athabasca River, Horse River, Clarke Creek, Poplar Creek, Beaver River, Steepbank River, McLean Creek, MacKay River, Ells River, Jocelyn Creek, Muskeg River, Firebag River, Fort Creek, Tar River, Calumet River, Eymundson Creek</style></custom2><custom4><style face="normal" font="default" size="100%">Science</style></custom4></record></records></xml>