Não informado. (2000). Technical paper. University of Puerto Rico, Agricultural Experiment Station.
Citace podle Chicago (17th ed.)Não informado. Technical Paper. Rio Piedras, Porto Rico: University of Puerto Rico, Agricultural Experiment Station, 2000.
Citace podle MLA (8th ed.)Não informado. Technical Paper. University of Puerto Rico, Agricultural Experiment Station, 2000.
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