OPALS Catalog Search Extension is a search tools chrome extension. it's a free extension , it has 70,000+ active users since released its first version, it earns an average rating of 3.00 from 2 rated user, last update is 1254 days ago.
When making Google searches, this will display relevant resources in a local OPALS library catalog database.
You could download the latest version crx file or older version files and install it.
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You could find more help information from opals catalog search extension support page.
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More about manifest_file of opals catalog search extension.
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