At this point, as you get close to the end of the game, you will only have to find two eBooks in Prague, assuming that you have found all eBooks during your first visit, as well as the eBooks unlocked when you visited Prague the second time.
The two eBooks that can be unlocked the third time you enter Prague; however, are very easy to miss, because to get them first you have to finish all objectives while playing Side Mission 10, named The Harvester.
Once you finish The Harvester, you have to play Mission 14, because you will unlock Side Mission 11, named The Las Harvest.
If you fail to do so, you will not be able to get the eBooks revealed in the following guide; therefore, you will have to replay the game.
Here are the last two Deus Ex: Mankind Divided eBooks you need to find in Prague, if you are looking to unlock the Tablet Collector achievement/trophy.
eBook #71 – In the Footsteps of the Harvester
If you have followed the directions above, the first eBook you have to read is in an apartment you must access during Side Mission 11 (see the first image below).
Enter apartment 31, and check the living room. Behind a red couch is a large shelf and the eBook (also pictured).
eBook #72 – Tai Yong Medical Report
The second Deus Ex: Mankind Divided eBook located in Prague can also be obtained when you play Side Mission 11.
During this mission you will have to complete a secondary objective which requires you to find Dr. Cipra.
This objective will lead you to Lekarna Pharmacy (pictured below).
Enter the pharmacy, cross the first room and head to the door on the other side. Follow the first set of stairs and enter the ventilation shaft.
When you exit on the other side, turn left and you will see a refrigerator. Move it to discover a secret hole in the wall, where the eBook is hidden (second screenshot).
Our YouTube walkthrough shows how to complete Side Mission 11 on stealth.
After you find these two collectibles, you are ready to start Mission 15 which includes the last 3 eBooks required for the trophy.