[A FRIENDSHIP OF SCHOLARS DURING THE LAST CENTURY: ALEXANDER VON HUMBOLDT AND ACHILLE VALENCIENNES (UNPUBLISHED CORRESPONDENCE)].
D005060:Europe; D005197:Famous Persons; D005602:France; D033062:Friends; D049671:History, 18th Century; D049672:History, 19th Century; D012586:Science; D015046:Zoology
BIOGRAPHIES; EUROPE; FAMOUS PERSONS; FRANCE; HISTORY; SCIENCE; ZOOLOGY
UNE AMITI'E DE SAVANTS AU SI'ECLE DERNIER: ALEXANDER VON HUMBOLDT ET ACHILLE VALENCIENNES (ORRESPONDANCE IN'EDITE)