| http://digfir-published.macmillanusa.com/evaluating_new_information_tutorial/sources_of_information.html | Chapter 1. Is BPA a Toxin?
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| http://digfir-published.macmillanusa.com/evaluating_new_information_tutorial/sources_of_information_dlap.xml | DLAP questions | 51d3013bb62f8b1f1500000e |