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259:Protected areas established in 1816
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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 1816
313:1810s in the environment
239:1816 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:(1 C, 1 P)
40:the year
287:(4 C)
263:(3 P)
219:(1 P)
188:1860s
183:1850s
178:1840s
173:1830s
168:1820s
162:1810s
156:1800s
151:1790s
146:1780s
141:1770s
136:1760s
318:1816
125:1821
120:1820
115:1819
110:1818
105:1817
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63:and
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38:in
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252:P
228:N
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