Science  Standard Nine  
Tamilnadu State Council of Education Research & Training 
 - Rev.ed. 
 - (Chennai)  Tamil Nadu Text Book and Educational Service Corporation  2020 
 - iv.,324p.  ill., maps.,  30cm 
<br/><br/> Includes Index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Standard Nine<br/>Ninth Science <br/>9th Science
<br/><br/><label>Dewey Class. No.: </label>500  / TAM