BIOLOGICAL FLORA OF THE BRITISH-ISLES QUERCUS L

[21] CAMUS A, 1936, CHENES

[22] CARTWRIGHT KS, 1936, PRINCIPAL ROTS ENGLI

[23] AN EXAMINATION OF THE POLLEN LOADS OF ANDRENA - THE SPECIES THAT VISIT FRUIT TREES [J]. JOURNAL OF ANIMAL ECOLOGY, 1946, 15 (01) : 9 - 21

[24] Chettleburgh M. R., 1955, British Birds, V48, P183

[25] Chettleburgh M. R., 1952, British Birds, V45, P359

[26] CHINNER JH, 1948, THESIS IMPERIAL FORE

[27] Clapham A.R, 1952, FLORA BRIT ISLES

[28] COINTAT M, 1951, REV FOR FRANC, V4, P268

[29] CONNOLD ET, 1908, BRIT OAK GALLS

[30] CRAIB WG, 1918, NOTES R BOT GDN EDIN, V64, P1

[21] CAMUS A, 1936, CHENES

[22] CARTWRIGHT KS, 1936, PRINCIPAL ROTS ENGLI

[23] AN EXAMINATION OF THE POLLEN LOADS OF ANDRENA - THE SPECIES THAT VISIT FRUIT TREES [J]. JOURNAL OF ANIMAL ECOLOGY, 1946, 15 (01) : 9 - 21

[24] Chettleburgh M. R., 1955, British Birds, V48, P183

[25] Chettleburgh M. R., 1952, British Birds, V45, P359

[26] CHINNER JH, 1948, THESIS IMPERIAL FORE

[27] Clapham A.R, 1952, FLORA BRIT ISLES

[28] COINTAT M, 1951, REV FOR FRANC, V4, P268

[29] CONNOLD ET, 1908, BRIT OAK GALLS

[30] CRAIB WG, 1918, NOTES R BOT GDN EDIN, V64, P1