THE BREEDING BIOLOGY OF THE GREY SEAL, HALICHOERUS-GRYPUS (FAB), ON THE FARNE ISLANDS, NORTHUMBERLAND

[21] Hickling G., 1956, Transactions of the Natural History Society Northumberland NS, V11, P230

[22] Hickling G., 1955, Transactions of the Natural History Society Northumberland NS, V11, P153

[23] HICKLING G, 1959, T NAT HIST SOC NORTH, V13, P33

[24] Lockey R. M., 1954, Oryx, V2, P384

[25] MATTHEWS LH, 1950, P ZOOL SOC LOND, V120, P763

[26] Page F. J. T., 1962, Transactions of the Norfolk and Norwich Naturalists' Society, V19, P416

[27] RAE BB, 1960, SEALS SCOTTISH FISHE

[28] SELBY P J, 1841, ANN MAGAZINE NATURAL, V6, P462

[29] Telfer I. M., 1953, Transactions of the Natural History Society Northumberland NS, V10, P165

[30] AN EXPERIMENT IN MARKING THE GREY SEAL HALICHOERUS-GRYPUS [J]. NATURE, 1952, 169 (4308) : 883 - 883

[21] Hickling G., 1956, Transactions of the Natural History Society Northumberland NS, V11, P230

[22] Hickling G., 1955, Transactions of the Natural History Society Northumberland NS, V11, P153

[23] HICKLING G, 1959, T NAT HIST SOC NORTH, V13, P33

[24] Lockey R. M., 1954, Oryx, V2, P384

[25] MATTHEWS LH, 1950, P ZOOL SOC LOND, V120, P763

[26] Page F. J. T., 1962, Transactions of the Norfolk and Norwich Naturalists' Society, V19, P416

[27] RAE BB, 1960, SEALS SCOTTISH FISHE

[28] SELBY P J, 1841, ANN MAGAZINE NATURAL, V6, P462

[29] Telfer I. M., 1953, Transactions of the Natural History Society Northumberland NS, V10, P165

[30] AN EXPERIMENT IN MARKING THE GREY SEAL HALICHOERUS-GRYPUS [J]. NATURE, 1952, 169 (4308) : 883 - 883