You can get help from following regarding downloading of research articles and books;

https://citationsy.com/blog/download-research-papers-scientific-articles-free-scihub/

I think you can find it on the net !!

Dear Mohammed Lghamour ,

It's available as instant digital download here:

https://link.springer.com/book/10.1007%2F978-94-024-1558-2

also here:

https://www.amazon.com.au/Principles-Alluvial-Fan-Morphology-Bowman/dp/9402415564

and here:

https://books.google.com/books/about/Principles_of_Alluvial_Fan_Morphology.html?id=zWIOuAEACAAJ

• You will get the DOI number of the book in this link - https://link.springer.com/book/10.1007%2F978-94-024-1558-2 . Then you can copy the DOI number in https://sci-hub.tw and proceed (click - open) to download the pdf version of the book.

Thank you Sayan