この Book あなたの言語には存在しません, で見る: English (en),
またはGoogle翻訳を使用する:  

Although agricultural systems in which two or more useful plants are grown simultaneously on the same area have been receiving increasing attention in recent years, the practice has long been recognized as a way in which farmers in the tropics and subtropics with limited land resources can produce food and cash crops.

Publication Details

  • Publisher: New York State College of Agriculture and Life Sciences, Cornell University,
  • Dewey Decimal: 631.58
  • ECHO Library: 631.58 KAS