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PLoS ONE: an inclusive, peer-reviewed, open-access resource from the PUBLIC LIBRARY OF SCIENCE. Reports of well-performed scientific studies from all disciplines freely available to the whole world.

The NASA/IPAC Extragalactic Database (NED) provides a multi-wavelength fusion of data for millions of objects outside the Milky Way galaxy. The astrophysical objects covered in NED include galaxies, quasars and other active galactic nuclei (AGNs), g...

Best model train resource for Lionel, MTH, K-Line trains, accessories, layouts and repair parts. Expert service on O Gauge trains. Over 12,000 train parts in stock.

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