Title: The face of the earth
Subjects: Human ecology, Study and teaching, Congresses, History, Environmental policy, World history, Histoire, Congrès, Étude et enseignement, Écologie humaine, Study & Teaching, Humanökologie, Weltgeschichte, Ecologie, History--study and teaching, History--study and teaching--congresses, Human ecology--congresses, D16.25 .f33 2000, 907