J. Russell Smith,US conservationist

Numéro d’image : 11682661
J. Russell Smith,US conservationist
Joseph Russell Smith (1874-1966),US conservationist,geographer and economist,examining a plant. Smith was Professor of Geography at the University of Pennsylvania,USA. He published numerous textbooks and wrote widely on conservation issues. His works included 'Tree Crops: A Permanent Agriculture' (1929) that spoke out against the soil erosion and destruction caused by the technique of tilling land and hillsides to grow crops. His work 'North America' (1924),on the geography and economic resources of the continent,went through many editions. Smith was President of the Association of American Geographers from 1941 to 1942
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