First questions and answers about Nature / 
Author 
 - India:  Pegasus publications;  [n.d]. 
 - unpaged;  18cm. 
<br/><br/><label>ISBN: </label>9788131917961 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>570   / N2196 [n.d]