ROBERT, W. O. (1979). The Climate Mandate Walter Orr Robert And Henry Lansford. W.H. Freeman.
Lua i Stíl Chicago (17ú heag.)ROBERT, Walter Orr. The Climate Mandate Walter Orr Robert And Henry Lansford. W.H. Freeman, 1979.
Lua MLA (8ú heag.)ROBERT, Walter Orr. The Climate Mandate Walter Orr Robert And Henry Lansford. W.H. Freeman, 1979.
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