660.28422 Bek P Beke , Bela ed. Principles of comminution . Budapest, Akdemia Kiado , 1964. 163 p. ilus ., graficos , tablas . 24cm . ''Bibliografia '': p. 159-163 <a id= "rdfa" about="http://bnjm.sld.cu/cgi-bin/item.py?idficha=bcuhcgrlyfof0100273" property = "oa:link" href="http://www.worldcat.org/oclc/1014558129">WorldCat</a>