Ehd definitions

EHD

David C. Douglas and George W. Greenaway, English Historical Documents 1042-1189 (London, Eyre and Spottiswoode, 1953), pp. 490-569
Found on http://info.sjc.ox.ac.uk/forests/glossary.htm

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EHD

Epizootic hemorrhagic disease
Found on https://www.encyclo.co.uk/local/22446

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