Spring weights of trans-Saharan migrants in Morocco.
1969. Ibis, 111: 1-10.
Mite lesions in sedge warblers and bee-eaters in Africa
Fry, C.H., Ferguson-Lees, I.J., & Ash, J.S.
1969. Ibis, 111: 611-612.
The influence of eruptive movements, age, population size and other factors on the survival of the Shag (Phalacrocorax aristotelis (L.))
1969. Journal of Animal Ecology, 38: 53-102.
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