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|GQuery: NCBI Global Cross-database Search||
Integrated, text-based search and retrieval system used at NCBI for the major databases, including PubMed, Nucleotide and Protein Sequences, Protein Structures, Complete Genomes, Taxonomy, and others.
|National Bibliography of U.S. Government Publications. Historic Shelflist.||
The GPO Historic Shelflist is the U.S. Government Printing Office's (GPO) historic card catalog covering U.S. Government documents from the 1800s to October 1992.