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49:human impact on the environment
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32:These articles relate to the
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243:Species described in 1834
273:1830s in the environment
219:1834 natural disasters
65:environmental issues
268:Environment by year
57:nature conservation
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26:Environment portal
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262:Categories
40:the year
247:(4 C)
223:(1 C)
188:1880s
183:1870s
178:1860s
173:1850s
168:1840s
162:1830s
156:1820s
151:1810s
146:1800s
141:1790s
136:1780s
278:1834
125:1839
120:1838
115:1837
110:1836
105:1835
100:1834
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80:1830
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63:and
42:1834
38:in
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