@misc{indiciae92274c820076, title = {Lead concentrations and reproduction in highway-nesting barn swallows}, author = {C.E. Grue and T. J. O'Shea and D. J. Hoffman}, year = {1984}, doi = {10.2307/1366811}, url = {https://pubs.usgs.gov/publication/5221960}, note = {Source identifier: 5221960} }