Universal Decimal Classification :  UDC 628 : public health engineering, water, illuminating, engineering 

 - 2nd ed 
 - 33 p. 
 - FID publication ; n.483 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abastecimento de įgua<br/>Engenharia sanitįria
<br/><br/><label>Universal Decimal Class. No.: </label>025.45:628CDU  / F293u