First published in 1969, Statistical Mechanics of Chain Molecules marked the beginning of a new era in the interpretation of the properties of macromolecules, including biopolymers. This rigorous and elegant treatment of chain configuration, configurational statistics and equilibrium properties has become required reading for polymer scientists, R & D chemists and physicists, and professors and students concerned with the physical chemistry and physics of polymers. Flory's methods and concepts are applicable to short chains and polymers alike, and they provide the theoretical background for today's understanding of polymers, copolymers and polymer blends and their properties.