621.3 B Blalock, Grover Cleveland, 1884- Principales of electrical engineering; theory and practice; 2d ed. New York and London, McGraw-Hill, 1936. xix, 584 p. ilus. diagrs. 23 cm.<a id= "rdfa" about="http://bnjm.sld.cu/cgi-bin/item.py?idficha=bcuhcgrlyfof0120073" property = "oa:link" href="http://www.worldcat.org/oclc/ 1086773348 ">WorldCat</a>