1. Review of the problem of birds contaminated by oil and their rehabilitation;Aldrich;U.S. Dept. Int., Bureau of Sport, Fisheries and Wildlife, Resource Publ. 87,1970
2. The problem of rehabilitating oiled seabirds;Beer,1971
3. Oil pollution and the conservation of seabirds;Clark,1969
4. Oiled birds in Holland;Gregory;Mar. Pol. Bull.,1971
5. Directional water-shedding properties of feathers;Kennedy;Nature,1970