00922nam--2200325---450-99000322360020331620090422081308.0000322360USA01000322360(ALEPH)000322360USA0100032236020090422d1968----km-y0itay50------baengUK||||||||001yy<<An>>introduction to modal logicG.E. Hughes and M.J. CresswellHughes G.E.LondonMethuen and Co.1968XI, 388 p.22 cmLogica matematica511.3HUGHES,G.E.603705CRESSWELL,M.J.47852ITsalbcISBD990003223600203316511.3 HUG4568/CBS511.300216476BKSCIRSIAV69020090422USA010813Introduction to modal logic1011752UNISA