Books spawning as loot in either dungeons or strongholds have multiple enchantments that are each for a different tool.
MC-34152
Multiple enchantments for different tools on enchanted books
Resolved
Duplicate
0
(Unassigned)
Unconfirmed
book, books, enchant, enchantments
Minecraft 13w39b
Retrieved
Duplicate of MC-31743 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.