BREEDING DISTRIBUTION OF TWITE IN CENTRAL BRITAIN

[1] Aikin J., 1795, DESCRIPTION COUNTRY

[2] BANNERMAN DA, 1953, BIRDS BRIT ISLANDS

[3] Baxter EV, 1953, BIRDS SCOTLAND

[4] BOLAM G, 1912, BIRDS NORTHUMBERLAND

[5] BURNETT JH, 1964, VEGETATION SCOTLAND

[6] Clark J.G.D., 1952, PREHISTORIC EUROPE E

[7] Coward T. A., 1910, VERTEBRATE FAUNA CHE

[8] EDWARDS W, 1954, PENNINES ADJACENT AR

[9] GODWIN H, 1956, HISTORY BRIT FLORA

[10] JOHNSON GG, 1965, BIOLOGICAL SIGNIFICA

[1] Aikin J., 1795, DESCRIPTION COUNTRY

[2] BANNERMAN DA, 1953, BIRDS BRIT ISLANDS

[3] Baxter EV, 1953, BIRDS SCOTLAND

[4] BOLAM G, 1912, BIRDS NORTHUMBERLAND

[5] BURNETT JH, 1964, VEGETATION SCOTLAND

[6] Clark J.G.D., 1952, PREHISTORIC EUROPE E

[7] Coward T. A., 1910, VERTEBRATE FAUNA CHE

[8] EDWARDS W, 1954, PENNINES ADJACENT AR

[9] GODWIN H, 1956, HISTORY BRIT FLORA

[10] JOHNSON GG, 1965, BIOLOGICAL SIGNIFICA