18 matching Vol. (parts 1, 2A, 2B, 3A, 3B, 3C, 4, 5, 6A, 6B, 6C, 7, 8A, 8B, 9A, 9B, 10A, 10B). Published between 1963-1990. All contents good, with clean pages and tight bindings. Covers vary in condition with some spines sunned and others still bright. Some volumes have creases to covers and wear to corners and edges. A few have sticker residue to covers. Overall the 18 volumes range from fair to good.