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Frank S. Dobson

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Stand Alone

Lichens: an illustrated guide.
Lichens: An Illustrated Guide
Lichens An Illustrated Guide to the British and Irish Species
A Field Key to Common Churchyard Lichens (and to Commoner Species Found Elsewhere on Stone, Fences and Gates)
Guide to Common Urban Lichens (On trees and wood)
Lichens, An Illustrated guide to theBritish & Irish species