RT Book T1 The concept of logical consequence A1 Etchemendy, John 1952- LA English PP Cambridge, Mass. u.a. PB Harvard University Press YR 1990 UL https://ixtheo.de/Record/018962769 NO Includes bibliographical references (p. [171]-172) and index CN BC135 SN 0674156420 K1 Tarski, Alfred K1 Logic, Symbolic and mathematical