Report on the grant of protection and or assistance to the isonicotinic acid hydrazide industry 

 - Delhi  Manager of Publications          1957 
 - 25p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(F6IAH):531.2.N55t, J6