Prasad,Sukdev <br/><br/>
अनजाने में हुए आविष्कार | Anjane Mein huye aaviskar / 

 - New Delhi  Prakashan vibhag  1989 
 - 46p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patents
<br/><br/><label>Dewey Class. No.: </label>608  / SUK-A