Title: Numbers and distribution of wintering waterbirds in the Western Palearctic and Southwest Asia in 1997, 1998 and 1999
Subjects: Water birds, Wintering, Populationsdichte, Geographical distribution, Wasservo gel, U berwinterung, Verbreitung, Oiseaux, Ecologie, Habitat, Répartition géographique, Überwinterung, Wasservögel