TY  - RPRT
TI  - Unsupervised classification of earth resources data.
AU  - Su, M. Y.
AU  - Jayroe, R. R., Jr.
AU  - Cummings, R. E.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19730032352
ID  - 19730032352
ER  -