Saxena, M.M. <br/><br/>
Environmental analysis water soil and air 
M.M. Saxena. 
 - 2nd ed.. 
 - Bikaner  Agro Botanical Publishers  1994 
 - 184p., illus.; 22cm. 
<br/><br/><label>Dewey Class. No.: </label>363.73  / S16E