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Contributor biographical information http://catdir.loc.gov/catdir/enhancements/fy1515/2005925687-b.html
Publisher description http://catdir.loc.gov/catdir/enhancements/fy1515/2005925687-d.html
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Table of contents Kostenfrei
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Contributor biographical information http://catdir.loc.gov/catdir/bios/random053/2001031862.html
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Table of contents http://www.gbv.de/dms/hbz/toc/ht006182716.pdf
Table of contents http://digitool.hbz-nrw.de:1801/webclient/DeliveryManager?pid=1586659&custom_att_2=simple_viewer