Used - Good

Good condition. Vol. XLIII, nos. 3-6; Vol. XLIV, nos. 1-4. (ciphers, cryptography) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included.