Search/Retrieve via URL

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Search/Retrieve via URL (SRU) is a standard search protocol for Internet search queries, utilizing Contextual Query Language (CQL), a standard query syntax for representing queries.

SRU, along with the related Search/Retrieve via Web (SRW) service, were created by as part of the ZING (Z39.50 International: Next Generation) initiative as successors to the Z39.50 protocol.