Tài nguyên được gắn thẻ với: Korea
1 đề mục được tìm thấy (Hiển thị 1 - 1)
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19-01-2011 For more than 4,000 years, Asian farmers worked the same fields repeatedly without sapping the land's fertility and without applying artificial fertilizer! How they accomplished this miraculous feat is described by author Franklin Hiram King, a former official of the U.S. Department of...