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:  

This study is a prelimary attempt to measure the current US yield potential of selected crops in terms of calories and protein.  The primary purpose was to illustrate an investigation approach that would be adaptable to developing countries.

Publication Details

  • Publisher: Foreign Economic Development Service, U.S. Dept. of Agriculture
  • Dewey Decimal: 613.2
  • ECHO Library: 613.2 USA