164 C Carnap, Rudolf, 1891- Meaning and neccessity, a study in semantics and modal logic. Chicago, I11., The University of Chicago press. [1947] ciii, 210 p. 23 cm. Bibliografía : p. 205.<a id= "rdfa" about="http://bnjm.sld.cu/cgi-bin/item.py?idficha=bcuhcgrlyfof0170391" property = "oa:link" href="http://www.worldcat.org/oclc/ 1071678731 ">WorldCat</a>