Produced by Erica Pfister-Altschul, Larry B. Harrison and the Online Distributed Proofreading Team at https://www.pgdp.net The following suspected errors have been changed in this text: Page 6: "highdays" changed to "highways" Page 11: "abbatoirs" changed to "abattoirs" Page 11: Added missing "." to "FIG. 5."] Page 14: Added missing "." to "FIG. 10."]…
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