作者:Robert Hoppe andDavid Banker
发布日期:2006
关键词:Agricultural Resource Management Survey;family farms;...
发布机构:United States Department of Agriculture
作者:Robert Hoppe , James M. MacDonald, David Banker
发布日期:2006
关键词:Agricultural Resource Management Survey (ARMS);family farms;...
发布机构:United States Department of Agriculture