The phylogeny and classification of the ferns
Symposium on the Phylogeny and Classification of the Filicopsida1972London.
Jermy, A. C.(Anthony Clive)
Crabbe, James Albert.
Thomas, Barrie Archie.
British Pteridological Society.
London Academic Press for the Linnean Society
1973
'Symposium on the Phylogeny and Classification of the Filicopsida, held jointly with the British Pteridological Society in the rooms of the Linnean Society, Burlington House, Piccadilly, London, W1V 0LQ [13-14 April, 1972]' - text
Includes bibliographies and index
Ferns