@article {1527,
	title = {A report on the culture of the South African clawed frog Xenopus laevis (Daudin) at the Jonkershoek Inland Fish Hatchery.},
	journal = {Transactions of the Royal Society, South Africa},
	year = {1949},
	pages = {45-54},
	author = {Hay, D.}
}
@article {2442,
	title = {Une grenouille nouvelle, Rana (Ptychadena) retropunctata, du Mt Nimba (mat{\'e}riaux de la mission M. Lamotte en Haute Guin{\'e}e Fran{\c c}aise).},
	journal = {Bulletin du Museum National d{\textquoteright}Histoire Naturelle. Paris. Serie 2,},
	volume = {21},
	year = {1949},
	pages = {509-511},
	author = {Angel, F.}
}
@article {294,
	title = {Larval development of Nectophrynoides tornieri (Roux), with comments on direct development in frogs},
	journal = {Annals of the Carnegie Museum},
	volume = {31},
	year = {1949},
	pages = {257-277},
	keywords = {Nectophrynoides},
	author = {Orton, G.L.}
}
@book {276,
	title = {Les Chromosomes des Vertebres},
	year = {1949},
	address = {Lausanne, Switzerland},
	author = {Matthey, R.},
	editor = {F. Rouge}
}
