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The individual or group credited with creating the main content of a product, such as a book, film, or other creative work. The value is a free‑text string representing the name(s) of the primary creator.

The method used to bind the pages of a book or similar printed material, such as paperback, hardcover, spiral, wirebound, or other binding styles.

A unique identifier assigned to books and other printed publications, typically consisting of 10 or 13 digits. It may include hyphens for readability but is treated as a string value. The ISBN uniquely identifies a specific edition of a title across the publishing industry.

A list of the natural languages in which a product is available or supported.

The total count of individual pages contained in a book or printed publication. It represents the number of physical sheets that make up the product, regardless of layout or formatting.

The date on which the product was first made available to the public or released for sale. It is expressed as a calendar date in year‑month‑day format (YYYY-MM-DD). This attribute helps users identify the time period of the product’s availability and can be used for sorting, filtering, or determining relevance based on release era.

The calendar year in which the product was first published or released to the public. It is expressed as a four‑digit number (e.g., 2015) and can be used to filter, sort, or compare products by their release period.