What has changed between version 1.1 and 1.2 Improved page layout has reduced the page count even although the book contains more material. New references can be located by searching for the citation numbers (in square brackets): 7, 84, 166, 175, 210, 249, 310, 325, 338, 375, 390, 409, 506, 667, 668, 777, 828, 903, 938, 953, 975, 1055, 1059, 1159, 1201, 1203, 1210, 1212, 1232, 1254, 1308, 1337, 1338, 1358, 1384, 1461, 1485 and 1546. In most cases a sentence or paragraph was added for each new citation. Figure 981.1 is new and does not include a citation. Any plotted data that looked as if it might be fitted by a power law was checked for such by using a minimum likelihood method. See discussion in section 17.4 of sentence 0 (citation [249]). Only those cases where a reasonable fit was found are slope and quality of fit listed. If any plotted data looks like a power law and this information is not supplied the quality of fit was outside of acceptable bounds. Fixed grammatical typos and other minor issues are listed elsewhere: http://www.knosof.co.uk/cbook/newgrambugs.txt