TY  - RPRT
TI  - Determining the pattern of cementum annuli and relationship to reproduction in male sea otters
AU  - Josh Proper
AU  - Vanessa R. von Biela
AU  - Jennifer M. Burns
PY  - 2007
UR  - https://pubs.usgs.gov/publication/70174069
ID  - 70174069
ER  -