Jay Courtland Hackleman

Harold Winford Hannah, John William Lloyd, Maxwell Jay Dorsey, Paul Hubert Tracy, Walter August Huelsen, William Leonidas Burlison, John Paschal McCollum, Joseph Ackerman, Stewart Lawrence Tuckey · Yayınevi bilinmiyor

604 sayfa · 1940

Corn

Wesley Pillsbury Flint, Frederick Charles Bauer, Jay Courtland Hackleman · Yayınevi bilinmiyor

20 sayfa · 1927

Agriculture

Albert Lemuel Whiting, Cyril George Hopkins, Frank Ashmore Pearson, H. A. Ross, Harold Hanson Mitchell, Harry Alexis Harding, Harry Warren Anderson, James Lloyd Edmonds, Martin John Prucha, Robert Stewart, · Yayınevi bilinmiyor

Benjamin Koehler, Charles Elmer Durst, Frederick Charles Bauer, Frederick Francis Weinard, John William Lloyd, Laurence Joseph Norton, Oliver Ralph Overman, Paul Hubert Tracy, Sleeter Bull, Victor Wendell Kelley, · Yayınevi bilinmiyor

Chalmers Woodruff Crawford, Harold Hanson Mitchell, Harriet Muriel Phillips, J. Albert Evans, Leslie Ellsworth Card, Wesley Pillsbury Flint, William Barbour Nevens, Frederick Charles Bauer, James Lloyd Edmonds, Jay Courtland Hackleman, Margia B. Haugh, Fairie Mallory · Yayınevi bilinmiyor

Dwight Powell, Ernest De Witt Walker, Ernest Oliver Herreid, H. R. Kemmerer, John Henry Bigger, Margueritte Briggs, Murlin Ray Hodgell, Walter J. Wills, Burdet Heinemann, Howard Bliss Petty, Jay Courtland Hackleman · Yayınevi bilinmiyor

884 sayfa · 1952

Agricultural machinery

Clyde Maurice Linsley, James Lloyd Edmonds, Jay Courtland Hackleman, Louie Henrie Smith, Ray Iris Shawl, Roland Willey Bartlett, Wesley Pillsbury Flint, William Barbour Nevens, Alvin Frederick Kuhlman, Chalmers Woodruff Crawford, John Henry Bigger, George Harlan Dungan · Yayınevi bilinmiyor

Clarence Henry Eckles, Claude Burton Hutchison, Frederick Blackmar Mumford, John Arden Ferguson, Luther Abraham Weaver, Merritt Finley Miller, Missouri · Yayınevi bilinmiyor

416 sayfa · 1911

Corn

Arthur Samuel Colby, H. A. Ross, Ivan Wright, Jay Courtland Hackleman, John William Lloyd, Juliet Lita Bane, Martin John Prucha, Warren Albert Ruth, William Anderson, James Marshall Brannon, Arthur Samuel Ambrose · Yayınevi bilinmiyor

610 sayfa · 1920

Agricultural credit

Charles Spencer Crandall, H. A. Ross, Harold Clayton M. Case, John Benjamin Rice, Martin John Prucha, Paul Hubert Tracy, Robert Graham, Walter Lee Gaines, Wendell Holmes Tisdale, Wesley Pillsbury Flint, William Barbour Nevens, · Yayınevi bilinmiyor

Harold Winford Hannah, John William Lloyd, Joseph Ackerman, Kenneth John Kadow, Maxwell Jay Dorsey, Paul Hubert Tracy, R. H. Wilcox, Walter August Huelsen, William Leonidas Burlison, Harold Clayton M. Case, Harry Warren Anderson, John Paschal McCollum, · Yayınevi bilinmiyor

Frederick Charles Bauer, George Harlan Dungan, Harry Warren Anderson, John Jacob Pieper, John William Lloyd, Laurence Joseph Norton, Paul Hubert Tracy, Robert Childers Ashby, Robert Graham, Victor Wendell Kelley, William Garfield Kammlade, · Yayınevi bilinmiyor

William Leonidas Burlison · Yayınevi bilinmiyor

64 sayfa · 1941

Weeds

International Crop Improvement Association, Jay Courtland Hackleman · Yayınevi bilinmiyor

59 sayfa · 1961*

International Crop Improvement Association

Jay Courtland Hackleman · Yayınevi bilinmiyor

59 sayfa · 1961

Agriculture

International Crop Improvement Association · Yayınevi bilinmiyor

59 sayfa · 1961

Crop improvement

Frank Ashmore Pearson, H. A. Ross, John Benjamin Rice, Paul Hubert Tracy, Robert Graham, Walter Lee Gaines, Wendell Holmes Tisdale, Wesley Pillsbury Flint, Chris Simeon Rhode, Clyde Evert Leighty, Frederick Alexander Davidson, Ivan Bertrand Boughton, Jay Courtland Hackleman, · Yayınevi bilinmiyor