From Guild Wars 2 Wiki
— In-game description
- Fractal Research Pages (28) can be combined into a journal.
- Fractal Journals can be traded in for the following collection items:
- Ascalonian Fractal Field Research Paper in the Urban Battleground Fractal for Ad Infinitum I: Finite Result
- Molten Alliance Fractal Field Research Paper in the Molten Boss Fractal for Ad Infinitum II: Upper Bound
- Thaumanova Fractal Field Research Paper in the Thaumanova Reactor Fractal for Ad Infinitum III: Unbound
- Aetherblade Fractal Field Research Paper in the Captain Mai Trin Boss Fractal for Legendary Backpack: Ad Infinitum
- They must be traded in the correct order. Ad Infinitum I is required to be complete before II is unlocked. So, the first journal you make has to be turned in at the end of the Urban Battleground fractal.