TY - BOOK AU - Guttenplan,Samuel D. TI - Languages of logic: an introduction to formal logic SN - 9781557869883 (Pbk) AV - BC71 .G88 1997 U1 - 160 G98L2 23 PY - 2006/// CY - Oxford, UK PB - Blackwell Publishers KW - Logic N1 - Includes bibliographical references and index ER -