1. Ahrensburg, C. M., and Kimball, S. T. (1968).Family and Community in Ireland, 2nd ed. Harvard Univ. Press, Cambridge, Mass.
2. Berglund, J. (1973). Paa den yderste nøgne ø.Skalk No. 4.
3. Bocher, T. W. (1954). Oceanic and Continental vegetational complexes in Southwest Greenland.Meddelelser on Grønland 148 (1).
4. Bocher, T. W., Holmen, K., and Jakobsen, K. (1968).The Flora of Greenland. Haase and Co., Copenhagen.
5. Bowden, M. J.,et al. (1980). The effect of climatic fluctuations on human populations: Two hypotheses. In Wigley, T. M. (ed.),Climate and History, Cambridge Univ. Press, Cambridge, in press.