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1LlyfrCyhoeddwyd 1971“...International Union of Geodesy and Geophysics...”
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2
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3LlyfrCyhoeddwyd 1975“...International Union of Geodesy and Geophysics. General Assembly...”
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4LlyfrCyhoeddwyd 1987“...International Union of Geodesy and Geophysics. General Assembly...”
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5Cyfresol
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6Llyfrgan Lee, William H. K. (William Hung Kan), 1940-“...International Union of Geodesy and Geophysics. Heat Flow Committee...”
Cyhoeddwyd 1965
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7LlyfrCyhoeddwyd 1971“...International Union of Geodesy and Geophysics...”
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8LlyfrCyhoeddwyd 1984“...International Union of Geodesy and Geophysics...”
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9LlyfrCyhoeddwyd 1967“...International Union of Geodesy and Geophysics...”
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10Trafodyn Cynhadledd LlyfrCyhoeddwyd 1979“...International Union of Geodesy and Geophysics. Canberra, A.C.T....”
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11LlyfrCyhoeddwyd 1968“...International Union of Geodesy and Geophysics...”
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12LlyfrCyhoeddwyd 1984“...International Union of Geodesy and Geophysics...”
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13Trafodyn Cynhadledd Llyfrgan Schneider, M. M.“...General Assembly of the International Union for Geodesy and Geophysics and the International...”
Cyhoeddwyd 1971
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14LlyfrCyhoeddwyd 1963“...International Union of Geodesy and Geophysics...”
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15Trafodyn Cynhadledd LlyfrCyhoeddwyd 1959“...International Union of Geodesy and Geophysics...”
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16LlyfrCyhoeddwyd 1979“...International Union of Geodesy and Geophysics...”
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17CylchgrawnCyhoeddwyd 1955“...International Union of Geodesy and Geophysics. General Assembly...”
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18CyfresolCyhoeddwyd 1969“...International Union of Geodesy and Geophysics...”
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19LlyfrCyhoeddwyd 1979“...International Union of Geodesy and Geophysics...”
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20LlyfrCyhoeddwyd 1995“...International Union of Geodesy and Geophysics. General Assembly...”