Mineyev, Yu N
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1991: Wildfowl Special Issue No. 1 - SECTION ONE: DISTRIBUTION AND STATUS
Distribution and numbers of Bewick's Swans Cygnus bewickii in the European Northeast of the USSR
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1991: Wildfowl Special Issue No. 1 - SECTION SIX: BIOMETRICS, PHYSIOLOGY AND GENETICS
Daily time and energy budgets in Whooper Swans Cygnus cygnus and Bewick's Swans Cygnus bewickii in the breeding season
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