Digest of Welsh Historical Statistics : Lead, Copper, Slate and Other Mineral...

Abstract copyright UK Data Service and data collection copyright owner. This machine-readable version of John Williams' iDigest of Welsh Historical Statistics/i is the result of...本摘要的版权归英国数据服务中心（UK Data Service）及该数据集采集内容的版权所有者所有。约翰·威廉姆斯所著《威尔士历史统计摘要》（Digest of Welsh Historical Statistics）的机器可读版本，其成果源自……