@misc{294, author = {Hill Mark O and Cooper J.M. and Hiscock K. and Marchant John H. and Preston Christopher D. and Rehfisch M M. and Roy D. B. and Tyler-Walters H.}, title = {Surveillance of non-native and newly-arrived species: a proposal for a non-native species portal for Britain}, year = {2007}, pages = {1-41}, month = {2007}, publisher = {Centre for Ecology and Hydrology}, address = {Huntingdon}, language = {eng}, }