FBP FEDERAL BUREAU OF PHYSICS #21

Nearly perfect. Minor imperfections such as a tiny spine stress or very light corner wear. Cover is flat with high gloss. Pages are off-white to white.

An above-average copy with minor wear. Small creases, tears, light spine stress, or minor corner blunting may be present. Cover retains most of its gloss.

An average, readable copy with moderate wear. Creases, tears, minor spine roll, and some loss of gloss may be present. Pages may be slightly tanned.

A below-average copy showing significant wear. Noticeable creasing, spine wear, and corner wear. Cover may have small tears or chips. Pages are tanned.

A well-read copy with heavy wear. Significant creasing, rolling, and possible small pieces missing from the cover. Cover may be loose. Pages are browned.

A heavily worn copy. Large tears, chunks missing, heavy creasing, soiling, or water damage. Covers may be detached. Suitable for reading copies only.