BOUDEWIJN T & DIRKSEN S (1996) Dutch Ornithological Union: National day 1995: Monitoring of the breeding success of cormorants in the benedenrivierengbied: how a time series can lead to new insights. LIMOSA 69 (3): 182-184.

Dutch Ornithological Union: National day 1995: Monitoring of the breeding success of cormorants in the benedenrivierengbied: how a time series can lead to new insights

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