@article {4, title = {Descriptions of dipterous insects of the United States}, journal = {Journal of the Academy of Natural Sciences of Philadelphia}, volume = {3}, year = {1823}, month = {04/1823}, pages = {9-32, 33-64, 73-104}, url = {http://books.google.com/books?id=7kEWAAAAYAAJ\&lpg=PA9\&ots=O03u9CEVBv\&dq=Descriptions\%20of\%20dipterous\%20insects\%20of\%20the\%20United\%20States\&pg=PA9$\#$v=onepage\&q=Descriptions\%20of\%20dipterous\%20insects\%20of\%20the\%20United\%20States\&f=false}, author = {Say, T} }