TY  - RPRT
TI  - Characteristics of central North Dakota wetlands determined from sample aerial photographs and ground study
AU  - L.M. Cowardin
AU  - D.S. Gilmer
AU  - L.M. Mechlin
PY  - 1981
UR  - https://pubs.usgs.gov/publication/1001414
ID  - 1001414
ER  -