621.3811 Bla N Blachman, Nelson M Noise and its effect on communication. New York, McGraw-Hill [c1966 ] ix, 212 p. ilus. 23 cm. (McGraw-Hill electronic sciences series) <a id= "rdfa" about="http://bnjm.sld.cu/cgi-bin/item.py?idficha=bcuhcgrlyfof0120042" property = "oa:link" href="http://www.worldcat.org/oclc/ 7555640 ">WorldCat</a>