000 00374nam a2200157Ia 4500
008 180424s9999 xx 000 0 und d
084 _a511.3 O2:1
245 0 _aLogic II: Proof
250 _a\\197100ENGGPSX
260 _aOpen University Press
260 _b1971
260 _cMilton Keynes
300 _a56p
500 _aincludes index and biblioraphy
942 _cBK
999 _c39055
_d39055