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Pages in category "Environmental organizations established in 1953"
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Environmental organizations by year of establishment
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177:Scientific organizations established in 1953
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161:Categories
118:(1 P)
87:1964
82:1963
77:1961
72:1958
67:1957
62:1953
57:1950
52:1948
47:1940
42:1933
37:1919
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143:U
107:W
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