Shradha Sinha etc. A Textbook of Environmental Studies Shradha Sinha, Manisha Shukla and Ranjana Shukla - New Delhi AITBS 2011 - 327 p. : 21 cm ISBN: 9788174733023 Subjects--Topical Terms: Civil Engineering Dewey Class. No.: 628 / SIN-A 2011 10675