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Credit
On the improvement of poor soils, read in the Holderness Agricultural Society, June 6, 1796, in answer to the following question ; "What is the best method of cultivating and improving poor soils, where lime and manure cannot be had?" With an appendix and notes / by J. Alderson. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.