Beall, J C. Possibilities and paradox : an introduction to modal and many-valued logic / J. C. Beall and Bas C van Fraassen. - / . - New York : Oxford University Press , 2003. - xv, 233p. : ill. ; 23cm . Includes bibliography and index ISBN: 0199259879 GBP23.99 Subjects--Index Terms: PHILOSOPHY Dewey Class. No.: 160 / BEA/P