Primary home heating fuel by counties of the United States, 1950, 1960, 1970 /
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| Format: | Government Document Map |
| Language: | English |
| Series: | United States maps.
3. |
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| Item Description: | Data from the Censuses of Population and Housing, 1950, 1960, and 1970. Cartographic material. |
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| Physical Description: | 1 map : color ; 59 x 91 cm. |