Gascogne Souterraine: Grottes et avens du département du Gers | pub: 1977 | held by: BCL |
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1 | pub: 1979 |
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2 | pub: 1980 |
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3 | pub: 1981 |
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4 | pub: 1982 |
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5 | pub: 1984 |
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6 Grottes et avens du département du Gers (2è édition) | pub: 1985 |
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7 | pub: 1988 |
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8 | pub: 1988 |
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9 | pub: 2001 |
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