Zobrazeno 1 - 3
of 3
pro vyhledávání: '"R. W. Bethke"'
Autor:
V. G. Thomas, R. W. Bethke
Publikováno v:
Canadian Journal of Zoology. 66:2024-2028
Geese, dabbling ducks, and diving ducks differ in their ability to take off vertically when initiating flight. For three species of goose (N = 127), five species of dabbling ducks (N = 89), and eight species of diving ducks (N = 128), the masses of p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ab603583e4c9360856bc606946c604e
https://doi.org/10.1139/z88-297
https://doi.org/10.1139/z88-297
Autor:
L. C. Westphal, R. W. Bethke
Publikováno v:
Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems. 73
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59d71e701c4d0c5bce83b39fcc1a8cfe
https://doi.org/10.1109/aieepas.1954.4498990
https://doi.org/10.1109/aieepas.1954.4498990
Autor:
R. W. Bethke, Robert C. Bailey, C. D. Ankney, Darrell G. Dennis, M. J. Conroy, G. G. Barnes, T. D. Nudds
Publikováno v:
The Journal of Wildlife Management. 53:1065
Contestation de l'hypothese de Ankney et al. selon laquelle il y aurait association entre l'abondance relative du canard noirâtre americain et celle du colvert,l'accroissement de l'une entrainant le declin de l'autre.Le declin des populations de Ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46bfb59fe8e78552920d5aa08c0700c4
https://doi.org/10.2307/3809611
https://doi.org/10.2307/3809611