Ecology of River Narmada - K. Sankaran Unni - Google Books

https://books.google.de/books?id=00jcLwUPhrwC&pg=PA31&lpg=PA31&dq=narmada&source=bl&ots=Q5gYO6LmDj&sig=5-rhgXlPcOBhy5dv2QGENzYrH

The Book Gives A Detailed Study Of The Physico-Chemical, Biological And Bacterio- Logical Assessment Of Water Pollution In The Largest West-Flowing Central Indian River.