Vallings, Harold Gordon. <br/><br/>
Mechanisation in building /  [Books]. 
H.G.Vallings.  
 - 2nd ed. 
 - London :   Applied Science Publishers,   1976. 
 - vii, 175p. :  ill. ;   23cm. 
<br/><br/><label>ISBN: </label>0853346518 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Construction equipment.