Não informado. (1955). Vermont farm and home science. Vermont Agricultural Experiment Station.
Lua i Stíl Chicago (17ú heag.)Não informado. Vermont Farm and Home Science. Burlington, Vt: Vermont Agricultural Experiment Station, 1955.
Lua MLA (8ú heag.)Não informado. Vermont Farm and Home Science. Vermont Agricultural Experiment Station, 1955.
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