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This category has the following 7 subcategories, out of 7 total.
41:
252:
Non-renewable resource companies established in 1931
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69:
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305:Renewable resource companies established in 1931
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272:Protected areas disestablished in 1931
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285:Protected areas established in 1931
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49:human impact on the environment
1:
32:These articles relate to the
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329:Species described in 1931
359:1930s in the environment
239:1931 natural disasters
65:environmental issues
354:Environment by year
57:nature conservation
35:natural environment
26:Environment portal
53:environmental law
47:They include the
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215:1931 meteorology
61:environmentalism
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199:Subcategories
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348:Categories
333:(5 C, 3 P)
243:(2 C, 4 P)
40:the year
289:(58 P)
309:(1 P)
276:(1 P)
256:(5 P)
219:(3 P)
188:1980s
183:1970s
178:1960s
173:1950s
168:1940s
162:1930s
156:1920s
151:1910s
146:1900s
141:1890s
136:1880s
364:1931
125:1936
120:1935
115:1934
110:1933
105:1932
100:1931
95:1930
90:1929
85:1928
80:1927
75:1926
63:and
42:1931
38:in
350::
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67:.
59:,
55:,
51:,
318:S
298:R
265:P
228:N
208:M
45:.
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