Drum, R. G., Ribic, C. A., Koch, K., Lonsdorf, E., Grant, E., Ahlering, M., . . . Sample, D. (2015). Strategic Grassland Bird Conservation throughout the Annual Cycle: Linking Policy Alternatives, Landowner Decisions, and Biological Population Outcomes. PLoS One.
Styl ChicagoDrum, Ryan G., et al. "Strategic Grassland Bird Conservation Throughout the Annual Cycle: Linking Policy Alternatives, Landowner Decisions, and Biological Population Outcomes." PLoS One 2015.
Citace podle MLADrum, Ryan G., et al. "Strategic Grassland Bird Conservation Throughout the Annual Cycle: Linking Policy Alternatives, Landowner Decisions, and Biological Population Outcomes." PLoS One 2015.
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