Students and young professionals in the field of environmental management not only need to be actively engaged on projects but importantly need to have the right knowledge and theory to back up their efforts for application.
Remember to make 'book's your best friends! Google is not everything.
There is priceless knowledge of experienced authors to be reaped from books.
Download the International Hydrology Series "Water Ecosystem Services: A Global Perspective" from http://unesdoc.unesco.
Download the book "Silent Spring" a work done by Rachel Carson: https://archive.org/
stream/fp_Silent_Spring- Rachel_Carson-1962/Silent_ Spring-Rachel_Carson-1962#page /n1/mode/2up
You can also download free books: http://bookboon.com/en/
The link will open up to the page of the books by author Max Berthouex on Pollution Prevention and Control. Dr.Modak has cited these has 'must read' books on his blog: https://prasadmodakblog.
So download read and strengthen your knowledge! Good luck!