The best book for Environmental Science is of Erach Bharuch is given below :-
https://www.ugc.ac.in/oldpdf/modelcurriculum/env.pdf
for examination notes go to this link https://classgovtjob.blogspot.com/p/examination-notes.html
for examination notes go to this link https://classgovtjob.blogspot.com/p/examination-notes.html
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