1. Crop surveys from multiband satellite photography using digital techniques;Anuta;Remote Sens. of Environ.,1971
2. Semi-automatic crop inventory from sequential ERTS-1 imagery;Johnson Claude,1973
3. Geographic considerations in automatic cover type identification;Hoffer,1971
4. Multispectral analysis for crop identification;Roberts,1970
5. Time dimension for crop surveys from space;Steiner;Photogrammetric Engineering,1970