00389nam a2200133Ia 4500008004100000020001500041040001700056082002200073100002400095245005400119260004300173300001400216650002500230190329s9999||||xx |||||||||||||| ||und||  a0720460549  aNITILcNITIL  221sta338.9bI59D  aInstitute De La Vie 0aDesign global system models and their limitations  aOxfordbNorth-Holland Publishingc1974  avii, 70p.  aECONOMIC DEVELOPMENT