@article {505,
	title = {The Effects of pH, Aluminum Concentration and Temperature on the Embryonic-Development of the European Common Frog, Rana- Temporaria},
	volume = {228},
	year = {1992},
	pages = {557-570},
	author = {Beattie, R.C. and Tyler-Jones, R. and Baxter, M.J.}
}
