[The harbor seal (Phoca vitulina) in the last century].
van der Kamp
J S
JS
Osterhaus
A D
AD
D000818:Animals; D004196:Disease Outbreaks / Q000662:veterinary*; D018104:Distemper Virus, Phocine; D005060:Europe; D018185:Morbillivirus Infections / Q000401:mortality / Q000662:veterinary*; D009426:Netherlands; D046048:Seals, Earless