text mx 1991 9999 continuing irregular a Existencias : (1991: 1-2) (1993: 3-1-2) (1994: 4-1-2) (1995: 5-1-2) (1996: 6-1-2) (1997: 7) (1998: 8-1) (1998: 8-2) (1999: 9-1) (1999: 9-2) (2000: 10-1) (2000: 10-2) (2001: 11-1) (2001: 11-2) (2002: 12-1) (2002: 12-2) (2003: 13-1) (2003: 13-2) (2003: 13-3) (2004: 14-2) (2005: 15-1) (2005: 15-2esp.) (2005: 15-3) (2006: 16-1) (2007: 17-1) (2007: 17-1sup) (2007: 17-2) (2007: 17-3) (2008: 18-1) Biología 0188-8897 AR-ReUNN 260630 20260702154131.0 238319 spa