TY  - RPRT
TI  - Estimating survival rates with age-structure data
AU  - Mark S. Udevitz
AU  - Brenda E. Ballachey
PY  - 1998
DO  - 10.2307/3802355
UR  - https://pubs.usgs.gov/publication/70020396
ID  - 70020396
ER  -