@misc{281, author = {Hill Mark O and Roy D. B. and Preston Christopher D.}, title = {Appendix 11: Development of environmental indices (Ellenberg-style scores) for British bryophytes. Atmospheric nitrogen pollution impacts on biodiversity: Phase 1 - Model development and testing (CR0289).}, year = {2005}, month = {2005}, publisher = {Defra}, address = {London}, language = {eng}, }