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pro vyhledávání: '"D. W. H. Adams"'
Autor:
D. W. H. Adams
Publikováno v:
Ibis. 104:133-146
SUMMARY Observations by radar were made of bird migration in Cyprus in October and November 1958 and March to May 1959. Migration was found to occur almost daily, usually beginning three-quarters of an hour after sunset. The standard direction of mig