@article {502,
	title = {Les charancons nuisibles aux patates douces.},
	journal = {Agronomie Tropicale},
	volume = {2},
	year = {1947},
	pages = {375-398},
	author = {Risbec, J.}
}
@article {503,
	title = {Les parasites des insectes d{\textquoteright}importance en Afrique tropicale et a Madagascar.},
	journal = {Agronomie Tropicale},
	volume = {15},
	year = {1960},
	pages = {624-656},
	author = {Risbec, J.}
}
