Bell, J L . Boolean-vallued models and independence proofs in set theory / J. L. Bell. - 2nd ed / . - Oxford : Clarendon press , 1985. - xx, 165p. : figs. ; 23cm . Includes bibliography and index ISBN: 0198532415 UKP 16.00 Subjects--Index Terms: INDEPENDENCE (MATHEMATICS) Dewey Class. No.: 511.32 / BEL/B