@article {3492,
	title = {Les agrandissements de la Biblioth{\`e}que nationale {\`a} Paris},
	journal = {La Nature},
	number = {II},
	year = {1879},
	pages = {329-330},
	url = {http://cnum.cnam.fr/CGI/fpage.cgi?4KY28.13/333/100/436/8/421},
	author = {Charles Letort}
}
@article {3493,
	title = {Les grands globes de la Biblioth{\`e}que nationale},
	journal = {La Nature},
	number = {116},
	year = {1875},
	month = {1875/08/21},
	pages = {177-179},
	url = {http://cnum.cnam.fr/CGI/fpage.cgi?4KY28.5/181/100/432/9/420},
	author = {Charles Letort}
}
