Philadelphia region input-output study working papers
Economic impact analyses survey procedures, and input-output coefficient tables
Isard, W.↗
Engineering topics
Langford, T. W., Jr.
Publications and source records attributed to Langford, T. W., Jr..
Philadelphia region input-output study working papers. Volume 3 - Final demand
Input-output coefficients for 86 final demand sectors in Philadelphia region
Isard, W.↗