Yazar
George Hammar
17 cilt bulundu.
Altus Lacy Quaintance, Burton Noble Gates, Clyde William Warburton, David Fairchild, Edward Lee Shaw, Eugene Sewell Bruce, Everett Franklin Phillips, George Alfred Runner, Gershom Franklin White, Harry Merwin Russell, Harry Thompson, Henry Earl Surface, Irving E. Melhus, John A. Newlin, John Hamilton, John Martin Miller, John T. Bowen, Norman De Witt Betts, Robert Macfarlane Chapin, Wightman Wells Garner, William Allen Orton, William Henry Fry, William Henry Long, William Mark Davidson, Charles Walter Bacon, Earl Devere Strait, George S. Demuth, Lewis Lincoln Heller, Lyman Crane Burnett, Charles Léon Foubert, Harry Houser Love · Yayınevi bilinmiyor
888 sayfa · 1914
Agricultural education
Claude Hibbard Hills, Conrad Harold Hammar, Ellis Ray Graham, Frederick Francis McKenzie, George W. Collier, Jesse Harold Neal, Samuel Brody · Yayınevi bilinmiyor
546 sayfa · 1938
Agricultural geography
A. M. Meyers, Andrew Edward Murneek, Harvey Birch Vanderford, Jesse Elmer Parker, Jordan Grey Lee, Joseph George O'Mara, Luther Ray Richardson, William Brooks Drew, William Herbert Eddy Reid · Yayınevi bilinmiyor
382 sayfa · 1942
Abandoned farms
George Hammar, Lennart Rydberg, Margareta Holmstedt · Yayınevi bilinmiyor
357 sayfa · 1965
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