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| 1977 | ||
|---|---|---|
| 1 | Enrique A. Calderon, Teresa A. Sobrino, Jose Luis A. Frias: GEO-XI-A Socioeconomic Laboratory for Planning Agencies. IFIP Congress 1977: 813-817 | |
| 1 | Enrique A. Calderon | [1] |
| 2 | Teresa A. Sobrino | [1] |
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