00402nam a2200145 a 450000100080000000500110000800800410001902000220006010000180008224500560010026000410015630000110019765000250020865300230023310193792014-02-22       1999    bl uuuu     u00u1 u    #d  a978-0-471-98606-51 aCHECKLAND, P.  aSoft systems methodologyba 30 - year retrospective  aChichester (Inglaterra): Wileyc1999  a330 p.  aANALISIS DE SISTEMAS  aTEORIA DE SISTEMAS