TY  - SER
AU  - Villegas-Amtmann,S.
AU  - Atkinson,S.
AU  - Costa,D.P.
TI  - Low synchrony in the breeding cycle of Galápagos sea lions revealed by seasonal progesterone concentrations
U1  - 599.7975 21
PY  - 2009///
KW  - Galápagos
KW  - Sea lions
KW  - Lobos marinos
KW  - Zalophus wollebaeki
ER  -