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259:Protected areas established in 1842
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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 1842
313:1840s in the environment
239:1842 natural disasters
65:environmental issues
308:Environment by year
57:nature conservation
35:natural environment
26:Environment portal
53:environmental law
47:They include the
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302:Categories
243:(1 C, 2 P)
40:the year
287:(5 C)
263:(1 P)
219:(1 P)
188:1890s
183:1880s
178:1870s
173:1860s
168:1850s
162:1840s
156:1830s
151:1820s
146:1810s
141:1800s
136:1790s
318:1842
125:1847
120:1846
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63:and
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252:P
228:N
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