Note
Footnote anchors are denoted by [number], and the numbering restarts at [1] with each new chapter. These footnotes for the main text have been kept in the section called ‘NOTES’ at the end of the text, as in the original book. Some tables in the Appendices have footnotes, denoted by (a) (b) etc, and these have been kept at the bottom of the relevant table, as they were in the original book.