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- 93980250 contributor B7154655.
- 93980250 created "[1990]".
- 93980250 date "1990".
- 93980250 date "[1990]".
- 93980250 dateCopyrighted "[1990]".
- 93980250 description "Includes bibliographical references (p. 27-28).".
- 93980250 extent "28 p. ;".
- 93980250 isPartOf "Working paper (University of Zimbabwe. Department of Agricultural Economics & Extension) ; AEE 90/5.".
- 93980250 isPartOf "Working paper ; AEE 5/90".
- 93980250 issued "1990".
- 93980250 issued "[1990]".
- 93980250 language "eng".
- 93980250 publisher "Mount Pleasant, Harare, Zimbabwe : Dept. of Agricultural Economics & Extension, Faculty of Agriculture, University of Zimbabwe,".
- 93980250 subject "Control theory.".
- 93980250 subject "Food supply Seasonal variations Mathematical models.".
- 93980250 subject "HD2131 .A46 no. 90/5".
- 93980250 title "An application of control theory to seasonal food security / by Ernst August Nuppenau.".
- 93980250 type "text".