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× total factor productivity
作者:Nicholas Rada, William Liefert, Olga Liefert
发布日期:2017
关键词:agriculture;agroholdings;...
发布机构:United States Department of Agriculture
作者:C. Richard Shumway , Jan Colvin , Lilyan E. Fulginiti , Jennifer Guin , and Jennifer L. Krull
发布日期:2017
关键词:Agricultural productivity;farm productivity;...
发布机构:United States Department of Agriculture
作者:Keith Fuglie, James M. MacDonald, Eldon Ball
发布日期:2007
关键词:Agriculture;productivity;...
发布机构:United States Department of Agriculture
作者:William McBride, Nigel Key
发布日期:2013
关键词:Hogs;pigs;...
发布机构:United States Department of Agriculture
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作者:Nigel Key, William McBride
发布日期:2007
关键词:Hogs;pigs;...
发布机构:United States Department of Agriculture
作者:Paul Heisey, Sun Ling Wang, Keith Fuglie
发布日期:2011
关键词:Agricultural research;public research;...
发布机构:United States Department of Agriculture