1. The puffin;Anker-Nilssen,1984
2. Changes in the population of gannets Sula bassana in North Norway;Barrett;Fauna Norv. Ser. C, Cinclus,1979
3. Residues of DDE and PCB in eggs from herring gull (Larus argentatus) and common gull (L. canus) in Norway;Bjerk;Acta Vet. Scand.,1971
4. Rester av klorinsekticider og polyklorerte bifenyler i testorganismer fra jord og vann;Bjerk;Norsk Vet. Tidsskr.,1970
5. Relations of the brown pelican to certain environmental pollutants;Blus;Pestic. Monit. J.,1974