Common eiders Somateria mollissima in the Netherlands: the rise and fall of breeding and wintering populations in relation to stocks of shellfish
Kats, R.K. H. (2007). Common eiders Somateria mollissima in the Netherlands: the rise and fall of breeding and wintering populations in relation to stocks of shellfish. PhD Thesis. Rijksuniversiteit Groningen, Wiskunde en Natuurwetenschappen: Groningen. ISBN 978-90-367-3006-8. 336 pp.
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