00350nam a2200133 a 450000100080000000500110000800800410001910000180006024500400007826000390011830000110015765000250016865300230019310193342020-11-24       1989    bl uuuu     u00u1 u    #d1 aCHECKLAND, P.  aSystems thinking, systems practice.  aNueva York (USA): John Wileyc1989  a330 p.  aANALISIS DE SISTEMAS  aTEORIA DE SISTEMAS