0187-358X 0187-358X S0187-358X2015000200139 ES MX 00 08 2015 00 08 2015 29 66 139 168

2004 1997 23 3 3 225-38 2010 2010 2010 5 4 4 21-38 Consortium of University Research Libraries & Research Information Network 2007 2000 26 1 1 33-44 2004 116-27 2006 11 4 4 11-4 2007 4 1 1 14-25 2009 28 4 4 179-201 2012 3 1 1 2002 P01 2008 53 53 2003 1 4 4 1-9 2010 49 4 4 341-9 2008 3 3 3 71-93 2003 46-59 LTSC (Learning Technology Standards Committee) 2002 2007 21 de septiembre 2007 Bilbao 2008 13 4 4 2010 19 5 5 463-8 2011 34 2 2 190-211 2004 1 9 9 21-32 2008 1983 2010 50 7-8 7-8 808-29 2011 72 3 3 2005 40 4 4 12-3 2002 19 1-10 2002 2011 50 3 3 224-9 2012 17 3 3 82-99 2003 3 4 4 2000 26 5 5 346-54 2007 63 1 1 115-41 2008 40 2 2 94-103 2011 20 1 1 38-46 2011 34 3 3 283-99 United Nations Statistics Division 1999 2004 71 13-36 2000