00393nam a2200157Ia 4500008004100000020001800041035001000059082001300069100002500082245004000107250000600147260006000153300000800213500000800221650000600229210723s9999||||xx |||||||||||||| ||und||  a0-07-099375-0  a24771  a164BJEF  aJeffreys, Richard C. 0aFormal Logic : Its Scope And Limits  a-  aN. DelhibTata McGraw - Hill Publishing Company Limited  a238  a137  a-