106 research outputs found
Changing ideas in forestry: A comparison of concepts in Swedish and American forestry journals during the early twentieth and twenty-first centuries
Studier over Saltpeterbildningen i Naturliga Jordmaner och dess Betydelse i Vaxtekologiskt Auseende.
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Orientierung ĂĽber die Exkursionen des IX. Internationalen Limnologenkongresses im Anebodagebiet
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