This is an example of merging PDF contents dynamically. This was created in like 3 hours... I can do better, but since I'm not being paid, I figured I'd skip that.
With this tech, you can merge the contents of books dynamically, automatically merging content from multiple books into a collected volume (the merge process even mixes content from different books together).
Check it out by looking at the "content" for individual books, then testing the complete one, and then trying combos below.
View whole books:
View complete merged book:
Complete Monkeys & ManiacsView book combinations: