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One of the best objective books in Agronomy. Needy can go for this beautiful book.
https://www.globalgreenews.com/2021/04/16/priyanka-varghese-released-hand-book-of-soil-science-for-national-level-competitions/
Priyanka Varghese releases Hand Book of soil science for national level competitions - Global Green News
Priyanka Varghese releases Hand Book of soil science for national level competitions - Global Green News