1. Manley, G., N.Y. Acad. Sci., 95, 162 (1961).
2. Manley, G., Proc. Roy. Soc., B, 161, 363 (1965).
3. Lamb, H. H., Report Sixth Intern. Cong. Quaternary, Warsaw 1961, 2, Paleoclimatological Section, 291 (1964).
4. Lamb, H. H., Palaeography, Palaeoclimatol., Palaeoecol., 1, 13 (1965).
5. Schell, I. I., Geograf. Ann., 43, 354 (1961).