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1Cyfresol“...Statistical Office of the European Communities...”
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2CyfresolCyhoeddwyd 1987“...Statistical Office of the European Communities...”
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3CyfresolCyhoeddwyd 1981“...Statistical Office of the European Communities...”
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4CylchgrawnCyhoeddwyd 1986“...Statistical Office of the European Communities...”
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5CyfresolCyhoeddwyd 1986“...Statistical Office of the European Communities...”
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6LlyfrCyhoeddwyd 2001“...Statistical Office of the European Communities...”
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7LlyfrCyhoeddwyd 1991“...Statistical Office of the European Communities...”
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8LlyfrCyhoeddwyd 1999“...Statistical Office of the European Communities...”
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9CyfresolCyhoeddwyd 1989“...Statistical Office of the European Communities...”
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10LlyfrCyhoeddwyd 1988“...Statistical Office of the European Communities...”
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11CyfresolCyhoeddwyd 1976“...Statistical Office of the European Communities...”
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12LlyfrCyhoeddwyd 1990“...Statistical Office of the European Communities...”
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13CylchgrawnCyhoeddwyd 1982“...Statistical Office of the European Communities...”
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14LlyfrCyhoeddwyd 1999“...Statistical Office of the European Communities...”
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15LlyfrCyhoeddwyd 1981“...Statistical Office of the European Communities...”
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16LlyfrCyhoeddwyd 1999“...Statistical Office of the European Communities...”
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17LlyfrCyhoeddwyd 2001“...Statistical Office of the European Communities...”
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18Trafodyn Cynhadledd LlyfrCyhoeddwyd 1961“...Statistical Office of the European Communities (Syracuse 1958.)...”
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19
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