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United States Department of Agriculture

Agricultural Research Service

Title:

Authors
item Karlen, Douglas
item Birrell, Stuart -
item Johnson, Jane
item Osborne, Shannon
item Schumacher, Thomas -
item Varvel, Gary
item Ferguson, Richard -
item Novak, Jeffrey
item Fredrick, James -
item Baker, John
item Lamb, John -
item Adler, Paul
item Roth, Greg -
item Nafziger, Emerson -

Last Modified: 3/28/2015
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