Due to coronavirus pandemic Springer has released around 400+ books for free . Each book released for free is worth around $50-150 on average. The books will remain free to access till july 2020 . Make the best use of this one time opportunity.
If you want to view and download the book individually see this spreadsheet: https://shrinkme.io/springer_spreadsheet
Google drive link of all free books released by springer:
Link 1: https://shrinkme.io/springer_books1
Link 2: https://shrinkme.io/springer_books2
Cheers and Happy Learning!!!