Swarup, R . <br/><br/>
Control and Sensing of Environmental Quality /  Textual Documents 
R.Swarup. 
 - Delhi :  Mittal Publications ,  1992. 
 - 442p. :  ill ;  21cm. . 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia - Environment 
<br/><br/><label>Dewey Class. No.: </label>030.341762  / Sw 11 Fo