TY - RPRT TI - Eggshell thinning in the brown pelican: Implication of DDE AU - L. J. Blus AU - R.G. Heath AU - C.D. Gish AU - A. A. Belisle AU - R. M. Prouty PY - 1971 DO - 10.2307/1296019 UR - https://pubs.usgs.gov/publication/5221242 ID - 5221242 ER -