"1934"^^ . . . "2013-08-01" . . . "Elmer L." . . . . . . . . "0000000081466590" . . . "Elmer L. Cooper"@fr . "Elmer L. Cooper" . . "Cooper" . . . . . . . "2013-08-01"^^ . "Agricultural mechanics : fundamentals and applications /Ray V. Herren, Elmer L. Cooper, 2002. - . - LC Authorities. - http://authorities.loc.gov. - 2003-10-31"@fr . . . "2003-10-31" . "14504029"^^ . "VIAF" . "male" .