M863.6 Yañ C Carballo, Emmanuel Agustín Yáñez. [La Habana, 1966] 45 p. 24 cm. <a id= "rdfa" about="http://bnjm.sld.cu/cgi-bin/item.py?idficha=bcuhcgrlyfof0170121" property = "oa:link" href="http://www.worldcat.org/oclc/ 61536101 ">WorldCat</a>