The World Book encyclopedia.

Includes index.

v. 1. A -- v. 2. B -- v. 3. C-Ch -- v. 4. Ci-Cz -- v. 5. D -- v. 6. E -- v. 7. F -- v. 8. G -- v. 9. H -- v. 10. I -- v. 11. J, K -- v. 12. L -- v. 13. M -- v. 14. N, O -- v. 15. P -- v. 16. Q, R -- v. 17. S-Sn -- v. 18. So-Sz -- v. 19. T -- v. 20. U, V -- v. 21. W, X, Y, Z -- v. 22. Research Guide, Index.

"A 22-volume, highly illustrated, A-Z general encyclopedia for all ages, featuring sections on how to use World Book, other research aids, pronunciation key, a student guide to better writing, speaking, and research skills, and comprehensive index".
Published since 1917, The World Book Encyclopedia maintains a rigorous annual revision process where nearly one-third of its contents are revisited, revised, and renewed to make it the most current print encyclopedia on the market today. 22 volumes including a Research Guide and Index More than 25,000 photographs, maps, and illustrations Engages more than 4,000 scholars and experts as contributors, reviewers, and consultants Thoroughly reviewed by an Advisory Board of 14 distinguished scholars that are masters in their chosen field

The online book link:

https://www.amazon.com/World-Book-Encyclopedia-2015-Set/dp/071660115X/ref=sr_1_1?dchild=1&keywords=9780716601159&qid=1616566236&sr=8-1