(1891). Vermont state Agricultural experiment station: научное издание. Bulletin No 23, march 1891, Analyses of Fertilizers Licensed for Sale in the State of Vermont in the Year 1891.
Citação do estilo Chicago (17ª ed.)Vermont State Agricultural Experiment Station: научное издание. Bulletin No 23, March 1891, Analyses of Fertilizers Licensed for Sale in the State of Vermont in the Year 1891. 1891.
Citação MLA (9ª ed.)Vermont State Agricultural Experiment Station: научное издание. Bulletin No 23, March 1891, Analyses of Fertilizers Licensed for Sale in the State of Vermont in the Year 1891. 1891.
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