Regional input-output study:
Isard, Walter.
Regional input-output study: recollections, reflections, and diverse notes on the Philadelphia experience/ Walter Isard and Thomas W. Langford. - Cambridge : MIT Press , 1971. - xvii, 228 p. ; - The Regional science studies series ; 10 .
0262090139
Input-output tables---Pennsylvania
339.230974811 / Re
Regional input-output study: recollections, reflections, and diverse notes on the Philadelphia experience/ Walter Isard and Thomas W. Langford. - Cambridge : MIT Press , 1971. - xvii, 228 p. ; - The Regional science studies series ; 10 .
0262090139
Input-output tables---Pennsylvania
339.230974811 / Re