TY - Generic T1 - The Effects of pH, Aluminum Concentration and Temperature on the Embryonic-Development of the European Common Frog, Rana- Temporaria Y1 - 1992 A1 - Beattie, R.C. A1 - Tyler-Jones, R. A1 - Baxter, M.J. JF - Journal of Zoology VL - 228 ER -