Não informado. (1887). Bulletin of the Vermont Agricultural Experiment Station. University of Vermont, College of Agriculture.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the Vermont Agricultural Experiment Station. Burlington, Vt: University of Vermont, College of Agriculture, 1887.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the Vermont Agricultural Experiment Station. University of Vermont, College of Agriculture, 1887.
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