Research and Publications
Atlas Of The Bryophytes Of Britain And Ireland. Volume 3: Mosses (Diplolepideae). Harley Books, Colchester.
. (1994) Atlas Of The Bryophytes Of Britain And Ireland. Volume 2: Mosses (Except Diplolepideae). Harley Books, Colchester.
(1992) Atlas Of The Bryophytes Of Britain And Ireland. Volume 1: Liverworts (Hepaticae And Anthocerotae). Harley Books, Colchester.
. (1991)