(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.
Citazione stile Chigago Style (17a edizione)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.
Citatione 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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