Solar Energy · 1982 · 25 citations · 13 references
Natural SciencesChemistrySoil SciencesAnalytical ChemistryInorganic ChemistrySoil ChemistryNitrogen RemovalSoil Nitrate Testing
13
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R. L. Plackett, J. P. Burman · Biometrika · 1946 · 3.8K citations
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