1. Harland, W. B., Polar Rec., 10, 40 (1960).
2. Harland, W. B., Quart. J. Geol. Soc. Lond., 114, 307 (1959).
3. Backlund, H., Observations dans le Spitzberg central Mission russe, 2, Sect. 9, B, 2, 1 (1908).
4. Harland, W. B., I.G.C. Rep. Twenty-first Sess., Pt. 19, 7 (1960).
5. Harland, W. B., Geol. Arctic, 1, 68 (1961).