Specification for concrete poles :  for electrical transmission & traction systems /  Folleto 
British Standards Institution. 
 - London :  British Standards Institution,  1960. 
 - 15, [1] p. ;  21 cm. 
 - (British standard 607 : 1960) .
<br/><br/> Catalogación preliminar. 
<br/><br/><br/>Texto en inglés.