@book{PPN600754081, title = {Trait\'e de la G\'eom\'etrie Descriptive Textbd}, series = {GDML\_Books}, publisher = {Courcier}, address = {Paris}, year = {1819}, language = {fr}, url = {http://dml.mathdoc.fr/item/PPN600754081} }
Vallée, Louis Léger. Traité de la Géométrie Descriptive Textbd. GDML_Books (1819), http://gdmltest.u-ga.fr/item/PPN600754081/