Rockwell, R. F.Findlay, C. S.Cooke, F.2012-06-222012-06-221987Am. Nat. 130 (1987): 839-863.http://hdl.handle.net/10315/17343enSnow GeeseClutch SizeIs there an optimal clutch size in Lesser Snow Geese?Articlehttp://www.press.uchicago.eduhttp://www.jstor.org/stable/2461782