@article {295,
	title = {Direct development in frogs},
	journal = {Turtox News},
	volume = {29},
	number = {1},
	year = {1951},
	month = {January 1951},
	pages = {2-6},
	author = {Orton, G.L.}
}
@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.}
}
@article {296,
	title = {The bearing of larval evolution on some problems in frog classification},
	journal = {Systematic Zoology},
	volume = {6},
	year = {1957},
	pages = {79-86},
	author = {Orton, G.L.}
}
