Major subject term Postable subject index terms from the NASA Thesaurus selected to reflect the important ideas and concepts in the document. The name of the meeting or conference at which the article was presented. Minor subject term Postable subject index terms from the NASA Thesaurus selected to refine the ideas and concepts in the document. The total number of pages of a document. Presentation note Indicates that the document has been or will be presented at a conference, symposium, meeting, or other gathering.
Publication date Indicates the actual or approximate date a document was published.
Publisher The individual or corporate body responsible for issuing the document. Report Number Unique identifying numbers taken from a report and standardized. A report number is limited to 30 or fewer characters and begins with an alpha character. Ampersands are replaced by a slash, spaces are filled in with hyphens. If the report is issued in several parts, this information is added to the report numbers in abbreviated form using hyphens for separation.