Google Scholar searches books and scholarly articles (and optionally patents, legal opinions, and legal journals).
Google Scholar was mentioned in these research abstracts https://dh2016.adho.org/abstracts/312
https://dh2016.adho.org/abstracts/52
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Google Scholar was mentioned in these research abstracts https://dh2016.adho.org/abstracts/312
https://dh2016.adho.org/abstracts/52