TY  - GEN
AU  - Thierry, G. Jacques,
AU  - Lambertsen, Richard H.,
TI  - Sperm whale deaths in the North Sea. Science and management
PY  - 1997///
KW  - CETACEOS
KW  - BALLENAS
KW  - MANEJO
KW  - MORTALIDAD
KW  - CONTAMINANTES
ER  -