Archie , . <br/><br/>
Science News 45 /  Textual Documents 
Archie & Nan Clow. 
 - Ist ed / 
 - New Delhi :  Penguin books India ( Pp ) Ltd. ,  1957. 
 - 127p ;  13cm. 
<br/><br/><label>Subjects--Index Terms: </label>Science News G- T G- Mathmatics 
<br/><br/><label>Dewey Class. No.: </label>505  / Sc 57