This is a polygon coverage of Physiographic Divisions in the conterminous United States. It was automated from Fenneman's 1:7,000,000-scale map, "Physical Divisions of the United States," which is bas
This is a Cook County Feature class of Unincorporated Zoning District Boundaries (Aggregate). This data is provided by the Cook County Dept. Of Building and Zoning and is maintained by the Cook County
Les sous divisions CGPM/GFCM ou GSA, « Geographical Sub-Areas » sont un découpage des divisions GFCM utilisé notamment pour l'attribution des quotas de pêche.
