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The NASA technical report server (NTRS) is now based on the open archives initiative protocol for metadata harvesting (OAI-PMH). This metadata harvesting version of NTRS represents a significant improvement over the previous distributed searching implementation of NTRS. In addition to being an OAI-PMH service provider, the new version of NTRS is also an OAI-PMH aggregator. This allows NTRS to serve as a one-stop shop for harvesting of NASA metadata.