Invasion ecology: still in the ‘establishment stage’ 50 years after Elton

D. M. Richardson (ed.) Fifty years of invasion ecology: the legacy of Charles Elton. Blackwell Publishing Ltd, Chichester, West Sussex, UK, 2011, 432 pp. illus, maps, 24 cm. Hardcover, ISBN 978-1-4443-3585-9, US$180.00; Paper, ISBN 978-1-4443-3586-6, US$79.95.