1. Weights and Measures Act (GB), 1878, 41 & 42 Vict., c. 49.
2. Weights and Measures Act. 11/12 Eliz. II, Ch 31 (1963).
3. Nature (GB), 183, 80 (1959).
4. Thorn, A., Megalithic Sites in Britain, Chs. 5 and 7 (Oxford: University Press, 1967).
5. Baynes, A. W., J. Textile Inst. (GB), 48, 254 (1957); 51, 348 (1960). Yarn Counts-A Universal System (Manchester: Textile Inst., 1948).