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Tip of the week: Search Engines like PsychSpider follow links within documents to gather more documents. A document can only be found by the search engine, if a hyperlink exists or the search engine knows the exact URL. If you can't find a specific document (i.e. "Psychoanalyse im Wandel der Zeit"), but you know who has published it (i.e. Universität Trier), PsychSpider might help you to get a contact address, so you will be able to request the document via telephone, letter or E-Mail.
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