?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A602843&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=R.E.&rft.au=Chapman%2C+R.E.&rft.aulast=Chapman&rft.date=2004&rft.tpages=237&rft.title=Conservation+and+foraging+ecology+of+bumble+bees+in+urban+environments.&rft.inst=University+of+London&rft.degree=Doctoral