Assertion: desertification | /r/AtLocation | use
Facets:
value: since least 1949
type: TEMPORAL
Source sentences:
text: Desertification is a term that has been in use since at least 1949 when Aubreville, a perceptive and well-informed botanist and ecologist, published a book on "Climate, Forets, et Desertification de l'Afrique Tropicale" (Aubreville, 1949).