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7Published 1974Other Authors “...Lawrence, P. J. (Philip John), 1921-...”
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8Published 1963Other Authors “...Lawrence, P. J. (Philip John), 1921-...”
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9Published 1963Other Authors “...Lawrence, P. J. (Philip John), 1921-...”
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10Published 1967Other Authors “...Lawrence, P. J. (Philip John), 1921-...”
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11Published 1979Other AuthorsConference Proceeding Book