TY - Generic T1 - Decline of the natterjack toad Bufo clamita in Britain: Paleoecological, documentary and experimental evidence for breeding site acidification Y1 - 1990 A1 - Beebee, T.J.C. A1 - Flower, R.J. A1 - Stevenson, A.C. A1 - Patrick, S.T. A1 - Appleby, P.G. A1 - Fletcher, C. A1 - Marsh, C. A1 - Natkanski, J. A1 - Rippey, B. A1 - Batterby, R. JF - Biological Conservation VL - 53 ER - TY - Generic T1 - Environmental change as a cause of natterjack toad (Bufo calamita) declines in Britain Y1 - 1977 A1 - Beebee, T.J.C. JF - Biological Conservation VL - 11 ER -