TY  - RPRT
TI  - Does Mallard clutch size vary with landscape composition?
AU  - I.J. Ball
AU  - M. J. Artmann
AU  - S. T. Hoekman
PY  - 2002
DO  - 10.1676/0043-5643(2002)114[0404:dmcsvw]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70024373
ID  - 70024373
ER  -