00501nam a22001817a 4500003000800000005001700008008004100025020001500066040002100081082001300102100002600115245006800141260003600209300002700245500001900272650001000291700001800301BD-DhUL20170112115436.0170112s1979    e  ||||| |||| 001 0 eng d  a007023051x  aBD-DhULcBD-DhUL  a160bGOE10aGeorgacarakos, G. N. 10aElementary formal logic / cG. N. Georgacarakos and Robin Smith  aLondon : bMcgraw- Hill,c1979.  axiv, 401 p. ; c23 cm.  aIncludes index 4aLogic  aSmith, Robin