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Histogram of oak queries from 1990. Queries per year: 1990-1997=average 3, 1998-2005=average 12, 2006-2008=average 15 (10 confirmed AOD), 2009=46 (26 confirmed AOD), 2010=82 (43 confirmed AOD)

Reference:

Histogram of oak queries from 1990. Queries per year: 1990-1997=average 3, 1998-2005=average 12, 2006-2008=average 15 (10 confirmed AOD), 2009=46 (26 confirmed AOD), 2010=82 (43 confirmed AOD)


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Credit line: Forestry Commission

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