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Don't overlook this link for more books on umpiring and marking.
Title The Marker's and Umpire's Duties
Link The Marker's and Umpire's Duties*
Click link and scroll down to pages 34 and 35
Compiling bodies World Bowls
First published 2010
List price Gratis
Number of pages One
Number of pages with Coloured photos Black & white photos Line drawings
  None None None
Synopsis The pages to which the link above refers are part of the Laws of the Sport of Bowls - Crystal Mark Third Edition

*This ebook is in portable document file (PDF) format and requires installation of the free Adobe Reader program.