bibliographic element
Technical term in library science and information science for a component of a bibliographic record, such as title, author, or publication date.
Bibliographic elements include the title, author name, and so on.
書誌情報 refers to bibliographic information as a whole, while 書誌要素 refers to an individual component of that information.
Compound of 書誌 (bibliography) and 要素 (element). The exact historical derivation is uncertain; the term is a modern technical coinage.