Acknowledgments

I should like to record my indebtedness to the following people for the help they have given me in my work on Roman Purbeck stone.

To any I have inadvertently left out, my apologies.

Coastal outlines used in the maps are from the Coastline Extractor of the United States National Oceanic and Atmospheric Administration, and are stated by NOAA to be in the public domain; they were converted from (longitude, latitude) to British National Grid by the Perl package Geography::NationalGrid by P. Kent. I thank various discussants on britarch@jiscmail.ac.uk for calling my attention to this package around December 2007.

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