Where to Watch Birds in the Thames Valley and ChilternsBrian Clews, Paul Trodd · First published 2007Open the Tome
Where to Watch Birds in BedfordshireBrian Clews, Andrew Heryet, Paul Trodd · First published 1995Open the Tome
Where to watch birds in Bedfordshire, Berkshire, Buckinghamshire, Hertfordshire & OxfordshireBrian Clews, Andrew Heryet, Paul Trodd · First published 1988Open the Tome
