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259:Protected areas established in 1871
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49:human impact on the environment
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32:These articles relate to the
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283:Species described in 1871
313:1870s in the environment
239:1871 natural disasters
65:environmental issues
308:Environment by year
57:nature conservation
35:natural environment
26:Environment portal
53:environmental law
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302:Categories
243:(2 C, 4 P)
40:the year
287:(4 C)
263:(2 P)
219:(3 P)
188:1920s
183:1910s
178:1900s
173:1890s
168:1880s
162:1870s
156:1860s
151:1850s
146:1840s
141:1830s
136:1820s
318:1871
125:1876
120:1875
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63:and
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