Attentive period - by Walter D. Graul in support of his 1973 PhD dissertation "Breeding adaptations of the mountain plover : (Charadrius montanus)", University of Minnesota. The full text of the dissertation is available at http://hdl.handle.net/11299/169795
Graul, Walter D..
Attentive period - supporting the PhD dissertation of Walter D. Graul, "Breeding adaptations of the mountain plover : (Charadrius montanus)".
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