if-modified-since

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if-modified-since

The term if-modified-since occurs in indexes or keywords of following Zvon materials:
Properties
HTTP 1.1 Reference : If-Modified-Since [Fields]
the protocol behind World Wide Web
External resources
RFC 2616
http://tools.ietf.org
Zvon keyword: if-modified-since
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starts with contains (at least 3 characters needed)