TY  - RPRT
TI  - Recent changes in California condor eggshells
AU  - L.F. Kiff
AU  - David B. Peakall
AU  - S.R. Wilbur
PY  - 1979
DO  - 10.2307/1367284
UR  - https://pubs.usgs.gov/publication/5221130
ID  - 5221130
ER  -