Sometimes, older editions enter the public domain or are uploaded for preservation. Search "Internet Archive Soil Physics A.K. Saha". You may find a borrowing option (1 hour at a time).
: Genesis, management, and stability of soil aggregates. soil physics by ak saha pdf
The primary academic resource by Arun Kumar Saha (often cited with Anuradha Saha Textbook of Soil Physics , with the 2nd edition published in 2018. Google Books Sometimes, older editions enter the public domain or