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1Llyfrgan Hayward, J. A. (John Aldred)“...New Zealand Agricultural Engineering Institute...”
Cyhoeddwyd 1969
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2LlyfrCyhoeddwyd 1968“...New Zealand Agricultural Engineering Institute...”
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3Llyfrgan Hayward, J. A. (John Aldred)“...New Zealand Agricultural Engineering Institute...”
Cyhoeddwyd 1968
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4Llyfrgan Jobling, G. A., 1943-1982“...New Zealand Agricultural Engineering Institute...”
Cyhoeddwyd 1974
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5
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6
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7
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8CylchgrawnCyhoeddwyd 1965“...New Zealand Agricultural Engineering Institute...”
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9CylchgrawnCyhoeddwyd 1985“...New Zealand Agricultural Engineering Institute...”
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10
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11
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12LlyfrCyhoeddwyd 1968“...New Zealand Agricultural Engineering Institute...”
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13LlyfrCyhoeddwyd 1984“...New Zealand Agricultural Engineering Institute...”
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14LlyfrCyhoeddwyd 1987“...New Zealand Agricultural Engineering Institute...”