https://www.mpdl.mpg.de/?view=article&id=1034:open-access-books-agreement-with-de-gruyter&catid=46:librarian-s-resource-center
Open Access Books Agreement with De Gruyter Brill - MPDL
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https://blog.degruyter.com/tag/de-gruyter-brill/
De Gruyter Brill - De Gruyter Conversations
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