Showing 1 - 9 results of 9 for search 'Hansen, Ralph', query time: 0.11s Refine Results
  1. 1
    Methane generation from livestock wastes /
    by Hansen, Ralph
    Published 1975
    Microform Book
  2. 2
    Wise use of appliances : energy conservation /
    by Hansen, Ralph
    Published 1977
    Microform Book
  3. 3
    Methane generation from livestock waste /
    by Hansen, Ralph W.
    Published 1975
    Available online via OAK Trust Repository
    Government Document Book
  4. 4
    Large tractor operation--fallacies and facts /
    by Downs, H. Willard
    Published 1979
    Other Authors: “...Hansen, Ralph...”
    Microform Book
  5. 5
    Matching tractor and implement sizes /
    by Downs, H. Willard
    Published 1979
    Other Authors: “...Hansen, Ralph...”
    Microform Book
  6. 6
    Operating farm machinery efficiently /
    by Downs, H. Willard
    Published 1979
    Other Authors: “...Hansen, Ralph...”
    Microform Book
  7. 7
    Selecting energy-efficient tractors using the Nebraska tractor test reports /
    by Downs, H. Willard
    Published 1979
    Other Authors: “...Hansen, Ralph...”
    Microform Book
  8. 8
    Estimating farming fuel requirements /
    by Downs, H. Willard
    Published 1979
    Other Authors: “...Hansen, Ralph...”
    Microform Book
  9. 9
    Manure harvesting practices : effects on waste characteristics and runoff /
    Published 1976
    Other Authors: “...Hansen, Ralph W....”
    Government Document Book
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