1 without site investigation groun is a hazard : Site Investigation Steering Group. 

 - London  Thomas Telford  1993. 
 - 45p.  ill.  30cm 
<br/><br/><label>ISBN: </label>0727719823  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building sites--Evaluation<br/>Engineering geology
<br/><br/><label>Dewey Class. No.: </label>624.151 WIT 1993