Principles of logic and the use of digital geographic information systems /
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| Format: | Government Document Book |
| Language: | English |
| Published: |
[Reston, Va.] :
Dept. of the Interior, U.S. Geological Survey ;
1986.
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| Series: | U.S. Geological Survey circular ;
977. |
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| Item Description: | Shipping list number: 87-50-P. |
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| Physical Description: | iii, 19 pages : illustrations ; 26 cm. |
| Bibliography: | Bibliography: page 19. |