Singh, A.K.. <br/><br/>
Human health and environment /  
A.K. Singh, R.P. Singh. 
 - New Delhi :   APH Publishing ,   1997. 
 - 2V :   ill.,tables ;   22cm .  
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<br/><br/><label>ISBN: </label>8170248469  Rs. 500.00 
<br/><br/><label>Subjects--Index Terms: </label>ECOLOGY 
<br/><br/><label>Dewey Class. No.: </label>577  / SIN/H