Population trends of Little and Sandwich Terns Sterna albifrons and S. sandvicensis in Britain and Ireland from 1969 to 1998
Ratcliffe, N.; Pickerell, G.; Brindley, E. (2000). Population trends of Little and Sandwich Terns Sterna albifrons and S. sandvicensis in Britain and Ireland from 1969 to 1998. Atlant. Seabirds 2(3-4): 211-226
In: Atlantic Seabirds. Seabird Group and Dutch Seabird Group: Sandy, Bedfordshire. ISSN 1388-2511, meer
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