TY - GEN A1 - Craggs, J. D. A1 - Ellison, N. F. PB - Wiley-Blackwell M3 - Text VL - 135 CY - Londyn PY - 1960 IS - 3 EP - 385 KW - Halichoerus grypus KW - Phoca vitulina KW - Seal T1 - Observations on the seals of the (Welsh) dee estuary SP - 375 UR - http://www.rcin.org.pl/dlibra/publication/edition/37190 ER -