TY - RPRT TI - Machine-readable mapping from National Network Simulation (NNS) zones to Bureau of Economic Analysis (BEA) areas AU - Lozier, Daniel W AU - Stiehler, John R PY - 1975 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 75-918 DO - 10.6028/NBS.IR.75-918 ER -