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RIDE OF PAUL REVERE
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Camera Above the Clouds
En samling af den kendte engelske luftfotograf Charles E. Brown's flyfotos af RAF-flytyper.
Air Force Register
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Coloniality in the Cliff Swallow
Many animal species live and breed in colonies. Although biologists have documented numerous costs and benefits of group living, such as increased competition for limited resources and more pairs of eyes to watch for predators, they often still do not agree on why coloniality evolved in the first place. Drawing on their twelve-year study of a population of cliff swallows in Nebraska, the Browns investigate twenty-six social and ecological costs and benefits of coloniality, many never before addressed in a systematic way for any species. They explore how these costs and benefits are reflected in reproductive success and survivorship, and speculate on the evolution of cliff swallow coloniality. This work, the most comprehensive and detailed study of vertebrate coloniality to date, will be of interest to all who study social animals, including behavioral ecologists, population biologists, ornithologists, and parasitologists. Its focus on the evolution of coloniality will also appeal to evolutionary biologists and to psychologists studying decision making in animals.
Brown Sugar Babies
Illustrations and rhyming text describe babies in terms of different sweet and tasty brown treats.
List of Officers of the Department of State, Including the List of Ministers, Consuls, and Other Diplomatic and Commercial Agents of the United States in Foreign Countries
List for March 7, 1844, is the list for September 10, 1842, amended in manuscript.
