000 00346nam a2200133Ia 4500
082 _a001.3
_bOPI
245 _aIntroduction to logic
_b: parts 10 to 18
260 _aBletchley Bucks:
_bThe Open University Press,
_c1971.
300 _a152p.
490 _aHumanities: a foundation course
546 _aeng
650 _aProbablity
_92196
942 _cBK
999 _c6678
_d6678