Weekes, Sydney Percy. <br/><br/>
SUSTAINABILITY today 
editor C.A. Brebbia 
 - Cambridge  University Press  c1966. 
 - pp. 78.:  21cm 
<br/><br/><label>ISBN: </label>003876030 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetics