Não informado. (2018). Report of the Board of Commissioners of Agriculture of Porto Rico. Government of Porto Rico, Board of Commissioners of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the Board of Commissioners of Agriculture of Porto Rico. San Juan: Government of Porto Rico, Board of Commissioners of Agriculture, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the Board of Commissioners of Agriculture of Porto Rico. Government of Porto Rico, Board of Commissioners of Agriculture, 2018.
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