TY  - MAP
AU  - Portnoy,John W.
AU  - Erwin,R.Michael
AU  - Custer,Thomas W.
ED  - National Coastal Ecosystems Team (U.S.)
ED  - Massachusetts Cooperative Wildlife Research Unit.
ED  - Migratory Bird and Habitat Research Laboratory (U.S.)
ED  - Patuxent Wildlife Research Center.
TI  - Atlas of gull and tern colonies: North Carolina to Key West, Florida (including pelicans, cormorants, and skimmers) 
U1  - 598.338 
PY  - 1981///
CY  - [Washington, D.C.]
PB  - The Team
KW  - Gaviota
KW  - Conteo
KW  - Estados sur-atlánticos (Estados Unidos)
KW  - Mapas
KW  - Golondrina de mar
KW  - Poblaciones de aves
KW  - Estadísticas
N1  - "Biological Services Program"--Portada; "Massachusetts Cooperative Wildlife Research Unit."; "Migratory Bird and Habitat Research Laboratory."; "Patuxent Wildlife Research Center."; "August 1981."; Incluye índices; Bibliografía: página 12
ER  -