TY  - RPRT
TI  - Nest sites of ducks in grazed mixed-grass prairie in North Dakota
AU  - Harold F. Duebbert
AU  - J. T. Lokemoen
AU  - D.E. Sharp
PY  - 1986
UR  - https://pubs.usgs.gov/publication/1001480
ID  - 1001480
ER  -