000 00282nam a2200109 4500
245 _aLogic.
_cby Nick Earle.
100 _aEarle, Nick.
260 _aLondon.
_bMacmillan.
_c1973
300 _avii,139p.; 22cm.-
490 _aIntroductory monographs in mathematics.
082 _a162
_b EAR
999 _c21288
_d21288