Environmental implications of trends in agriculture and silviculture | Regional crop production trends
1979
Unger, Samuel G.
Ключевые слова АГРОВОК
Библиографическая информация
Издатель Available through the National Technical Information Service, | Athens, Ga. : Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Springfield, Va. : Available through the National Technical Information Service, [1979]
Эту запись предоставил National Agricultural Library