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Aerial photograph;
Artificial and modified surfaces;
Barren;
Barren land;
Beach;
Census water;
Climatic factor;
Close-grown crops;
Conservation practice;
Conservation Reserve Program;
Conservation Reserve Program land;
Cover and management factor;
Cowardin system;
Cropland;
Cropping history;
Deepwater habitat;
Developed land;
Erodibility index;
Erosion (USDA);
Estuarine Wetland;
Farmsteads and ranch headquarters;
Field;
Forest land;
General cover;
Growing season;
Habitat composition;
Habitat configuration;
Habitat patch;
Hayland;
Herbaceous;
Horticultural cropland;
Irrigated land;
Lacustrine System;
Lake (land type);
Land capability classification;
Land cover/use;
Large streams;
Large urban and built-up areas;
Large water bodies;
Marine System;
Marshland;
Mines, quarries, and pits;
Minor land cover/uses;
Mud flat;
Open canopy short woody plants;
Open canopy tall woody plants;
Other aquatic habitats;
Other rural land;
Ownership;
Palustrine Wetland;
Pastureland;
Perennial stream;
Personal Digital Assistant ;
Photographic interpretation;
Practice factor;
Primary sample unit;
Prime farmland;
Railroads;
Rainfall and runoff;
Rangeland;
Remote sensing;
Reservoir (land type);
Ridge roughness;
Riverine System;
Riverwash;
Row crops;
Rural transportation land;
Saline deposits;
Salt flats;
Sample point;
Sand dunes;
Sheet and rill erosion;
Short woody plants;
Silviculture;
Slope (land type);
Slope length;
Slope-length factor;
Slope-steepness factor ;
Small built-up areas;
Small streams;
Small water bodies;
Soil erodibility factor;
Soil erodibility index;
Soil loss tolerance factor ;
Soil survey;
Stream (land type);
Tall woody plants;
Universal soil loss equation;
Unsheltered distance;
Uplands (land type);
Urban and built-up areas;
Vegetative cover;
Water (land type);
Water areas;
Water body;
Water spreading;
Wetlands (land type);
Wetland losses;
Wind erodibility group;
Wind erosion;
Wind erosion equation;
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