Ostrup, John C. <br/><br/>
Standard specifications for structural steel-timber-concrete and reinforced concrete 

 - 2a ed. 
 - New York  McGraw-hill Book Company  1911 
 - 99 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ESPECIFICACIONES TECNICAS<br/>MATERIALES DE CONSTRUCCION<br/>MATERIALES DE SOPORTE
<br/><br/><label>Universal Decimal Class. No.: </label>691:69.001.3/O83