| | Marine Biological Association of the United Kingdom |
| | Citadel Hill, Plymouth PL1 2PB Devon UK |
| http://www.mba.ac.uk |
| morze - środowisko i gospodarka morska |
| 2007 | | Site Characterisation of European Marine Sites: The Mersey Estuary SPA | abs | | 201 | | str | 2,3 | mb |