Regional Input-output study : Recollections, reflections, and diverse notes on the Philadelphia experience - Walter Isard; Thomas W Longford (Cambridge Mit Press, 1971)
Walter Isard & Thomas W Longford: Regional Input-output study : Recollections, reflections, and diverse notes on the Philadelphia experience. Cambridge. Mit Press, 1971. 0-262-09013-9--(330.0974811ISA)
ENGLISH