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The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.
1RXS — ROSAT All-Sky Bright Source Catalogue, ROSAT All-Sky Survey Faint Source Catalog. 1SWASP — SuperWASP. 2A — see 1A. 2C — Second Cambridge Catalogue of Radio Sources. 2E — The Einstein Observatory Soft X-ray Source List. 2MASS — Two Micron All Sky Survey. 2MASP — Two Micron All Sky Survey, Prototype.
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WorldCat is a union catalog that itemizes the collections of tens of thousands of institutions (mostly libraries), in many countries, that are current or past members of the OCLC global cooperative. It is operated by OCLC, Inc. [4] Many of the OCLC member libraries collectively maintain WorldCat's database , the world's largest bibliographic ...
The "preparatory school year" (clasa pregătitoare) is for children aged 6–7, and since it became compulsory in 2012, it usually takes place at school. The preparatory school year is a requirement in order to enter the first grade, being part of the primary education stage, according to Article 23 of the Education law no 1/2011 ( Legea ...
MARC standards. MARC ( machine-readable cataloging) is a standard set of digital formats for the machine-readable description of items catalogued by libraries, such as books, DVDs, and digital resources. Computerized library catalogs and library management software need to structure their catalog records as per an industry-wide standard, which ...
Researchers have found a link between semaglutide use and NAION, a rare condition that is the second-leading cause of optic nerve blindness. (Getty Images) (Jacob Wackerhausen via Getty Images)