| 作者 | A. P. Grifo / Arthur W. Dewey / Benjamin Arthur Bourne / Bill Wayne Pickett / David Gilbert Gosslee / Donald Gordon Hay / Edward G. Stockwell / Irving F. Fellows / John William Mamer / Lynwood R. Lundquist / Martha W. Dicks / Marvin Walter Kottke / Robert G. Burnight / Russell Edward Moffett / Stewart Johnson / University of Connecticut. Agricultural Experiment Station, Storrs / Dorothy G. Ingalls / L. D. Matterson / Thomas Clinton Morrison |
