noun
number of books; number of volumes
Used when counting books, magazines, or bound volumes. Often appears in library, publishing, or inventory contexts.
この図書館の蔵書冊数は約50万冊です。
The number of books in this library's collection is about 500,000.
シリーズの全冊数を教えてください。
Please tell me the total number of volumes in the series.