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1Geology of the Peterborough district : memoir for 1:50 000 Geological Sheet 158 (England and Wales).by Horton, A. (Albert), 1932-Other Authors: '; “...Downing, R. A. (Richard Allen)...”
Published 1989
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2Published 1986Other Authors: '; “...Downing, R. A. (Richard Allen)...”
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3Published 1991Other Authors: '; “...Downing, R. A. (Richard Allen)...”
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4by Rodda, John C. (John Carrol), 1934-Other Authors: '; “...Downing, R. A. (Richard Allen)...”
Published 1976
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