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NASA combined file postings statistics based on NASA Thesaurus, January 1968 - January 1991

机译：美国宇航局在1968年1月至1991年1月期间根据美国国家航空航天局词库统计了文件发布统计数据

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The NASA Combined File Postings Statistics is published semiannually (January and July). This alphabetical listing of postable subject terms contained in the NASA Thesaurus is used to display the number of postings (documents) indexed by each subject term from 1968 to data. The postings totals per term are separated by announcement or other media into STAR, IAA, NLN, and OTHER columnar entries covering the NASA document collection (1968 to date). Over 595,000 book postings for NALNET Books held by NASA Libraries are included under the NLN column. CSTAR postings as well as some previously unreported series are listed under the 'other' column. The distribution of 18,748,083 postings among the 17,304 Thesaurus terms is tabulated on the last page of Combined File Postings Statistics.

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年度 1991
页码 1-349
总页数 349
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
DOCUMENTS; INFORMATION SYSTEMS; STATISTICS; TERMS; THESAURI; DATA BASES; INDEXES (DOCUMENTATION); INFORMATION MANAGEMENT; LIBRARIES; NASA PROGRAMS;

机译：文件;信息系统;统计;条款;叙词表;数据库;指标（文件）;信息管理;图书馆;美国宇航局计划;

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NASA combined file postings statistics based on NASA Thesaurus, January 1968 - January 1991

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