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  1. By: Barker, Allen V.,
    Publication info: New Haven, Connecticut Agricultural Experiment Station, 1980
    Holding Institution: University of Connecticut Libraries
    Subjects: Effect of nitrogen on  Nitrogen content  Northeastern States  Plants  Soils  
  2. By: Graham, Russell T. - Tonn, Jonalea R. - Intermountain Research Station (Ogden, Utah)
    Publication info: [Ogden, Utah], U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1985
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Effect of nitrogen on  Fertilizers  Idaho  Nitrogen fertilizers  Plants  Trees  
  3. By: Morgan, M. F. (Mont Francis), - Jacobson, Henry G. M.
    Publication info: [New Haven], Connecticut Agricultural Experiment Station, 1942
    Holding Institution: University of Connecticut Libraries
    Subjects: Connecticut  Effect of nitrogen on  Lysimeter  Nitrogen fertilizers  Plants  
  4. By: Paton, David Guy,
    Publication info: Edmonton, AB, University of Alberta, 1981
    Holding Institution: University of Alberta Library
    Subjects: Effect of nitrogen on  Grasses  Nitrogen in agriculture  Plants  Research  
  5. By: Petermann, Arthur Julius,
    Publication info: Bruxelles, F. Hayez, 1890-1893
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Effect of nitrogen on  Nitrogen  Nutrition  Plants  
  6. By: Radwan, M. A., - DeBell, Dean S. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) - United States. Forest Service.
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1980
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Effect of nitrogen on  Nitrogen fertilizers  Plants  Western hemlock  
  7. By: Radwan, M. A., - Shumway, John S. - DeBell, Dean S. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) - United States. Forest Service.
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1979
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Douglas fir  Effect of manganese on  Effect of nitrogen on  Fertilization  Forest soils  Nitrogen fertilizers  Plants  
  8. By: Stewart, Joseph K.,
    Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1966
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Effect of nitrogen on  Lettuce  Plants  Transportation  West (U.S.)  
  9. By: Vickery, Hubert Bradford,
    Publication info: [New Haven], Connecticut Agricultural Experiment Station, 1940
    Holding Institution: University of Connecticut Libraries
    Subjects: Composition  Effect of nitrogen on  Plants  Tobacco  
  10. By: Waltman, C. S. (Clair Smith),
    Publication info: Lexington, Kentucky Agricultural Experiment Station, University of Kentucky, 1936
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Apples  Effect of nitrogen on  Effect of phosphorus on  Growth  Peach  Plants