e.g. 1 °, 2 °, 4 °, 8 °, 12 °, etc. Includes the height of the outer case, measured parallel to the spine, or of the resource when it is not bound, if it can be established that the resource is in a standardized publisher's binding or in publisher's wrappers. Includes the assumed format followed by a question mark when the format cannot be determined. Excludes dimensions if it cannot be established that the resource is in a standardized publisher's binding or in publisher's wrappers.