00859pam a2200253 i 45000010008000000030008000080050017000160080041000330100017000740200015000910200022001060400027001280500018001550820013001731000022001862450056002082600072002643000034003365000022003705040032003926500021004248560086004458560074005312708261BD-DhUL20161120150129.0780711s1980    enka     b    001 0 eng    a   76047197   a0521224764  a0521295157 (pbk.)  aDLCcDLCdDLCdBD-DhUL00aBC199.M6bC4700a160bCHM1 aChellas, Brian F.10aModal logic :ban introduction /cBrian F. Chellas.  aCambridge [Eng.] ;aNew York :bCambridge University Press,c[1980]  axii, 295 p. :bill. ;c24 cm.  aIncludes indexes.  aBibliography: p. [278]-279. 0aModality (Logic)423Publisher descriptionuhttp://www.loc.gov/catdir/description/cam022/76047197.html413Table of contentsuhttp://www.loc.gov/catdir/toc/cam028/76047197.html