The Production of Hyacinth Bulbs

by Arthur Vance Swarthout, Charles Sidney Leete, David Griffiths, David Segrid Olson, Elmer Lash, Ernst H. Wiecking, Frank Getz Ashbrook, Frank Heidtman Lathrop, Frederick Charles Lincoln, George Emil Heck, George Herbert Coons, H. F. Willard, Harold Coleman Hallock, John Chambers McDowell, Justus Watson Folsom, M. A. Yothers, R. W. Leukel, Ralph Henry Elsworth, Reginald D. Forbes, United States. Department of Agriculture, Walter Cochran Davis, Wiley Croom Smith, William Gustavus Wahlenberg, Charles M. Harris, Dewey Stewart, Donald Bruce, Fletcher Pearre Veitch, Floyd Frank Bondy, Ira Burton Lanphier, Karl Burchard Hanson, Theodore Lemuel Bissell, William Melvin Mohler, Finley George Larmer