Mara, David Duncan <br/><br/>
The design of small bore sewer systems 
David Duncan Mara 
 - Washington  The World Bank  1985 
 - iv,52p.  ill  28cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewers<br/>Small bore sewer sytems
<br/><br/><label>LC Class. No.: </label>IRA TD741.073