Field key to winter twigs : a guide to native planted deciduous trees, shrubs and woody climbers (xylophytes) found in the British Isles /
Poland, John,1979-author.
Walls, Robin,illustrator.
Botanical Society of the British Isles.
Includes index.
A companion volume to The vegetative key to the British Flora (including taxa from Europe, North America, South-east Asia and beyond).
Published in association with the Botanical Society of Britain & Ireland.