01.01.1992
The contaminants that make polluted water unsafe for humans are even more fatal to the organisms that live in the river. Marlene Guerrero and Barry Lloyd explain how the presence or absence of these crucial organisms can help us monitor water quality.
Practical Action Publishing Ltd, Company Reg. No. 1159018, England, VAT No. GB 880 9924 76 is the wholly owned publishing arm of Practical Action, Reg. Charity No. 247257, and trades only in support of its parent charity objectives
© 2025 Practical Action Publishing. All Rights Reserved.
Publishing Platform by CloudPublish archived by CLOCKSS accessed via OpenAthens
PRACTICAL ACTION PUBLISHING
The Robbins Building
25 Albert Street
Rugby, CV21 2SD,
United Kingdom
Call us on +44(0)1926 634501
Email us at publishinginfo@practicalaction.org.uk