Use of shotcrete for underground structural support :  Proceedings of the engineering foundation conference, berwick academic, south berwick, maine july 16-20, 1973 / 
With the cooperation of asce and aci 
 - 467 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concreto ligero--Manuales<br/>Construcciones de concreto--Congresos
<br/><br/><label>LC Class. No.: </label>TA681  / E53