00683nam a2200169Ia 4500008004100000010001400041020001800055040001700073082003000090100001800120245012300138260003100261300001600292440006100308650012100369700002300490190327s9999||||xx |||||||||||||| ||und||  a72-137471  a0-262-09013-9  aNITILcNITIL  221sta301.360974811bI76R  aIsard, Walter 0aRegional input-output studybrecollections, reflections and diverse notes on the Philadelphia experiencecWalter Isard  aCambridgebMIT Pressc1971  axvii, 228p.  aThe regional science studies series/ ed. by Walter Isard  aPhiladelphia(Pa)-Regional disparities and Economic conditions; Regional planning-Philadelphia(Pa); Rural development  aLangford, Thomas W