11. The 318 pages of narrative are followed by 50 pages of appendices and other addenda . 12. They then submitted revised plans or addenda . 13. Addenda are often used in standard form contracts to make changes or add specific detail.14. In 2007 SPARC and Science Commons announced a consolidation and enhancement of their author addenda . 15. Two further volumes of " Addenda " were published in 1929 and 1932. 16. Reprinted, with Addenda , in Ten Bibliographies of Twentieth Century Russian Literature ( ed. 17. Both the main body of the Act and its addenda may have cross-headings. 18. Several addenda were published for 135-2010 and will be republished as 135-2012. 19. Examples with more than one type of metal addenda atom in the cluster are well known. 20. Addenda to the inventory catalogue include wildflower, tree, butterfly, bird and mammal populations.