Surveying practice. 

 - London :  National Coal Board :  Mining Department,  1973. 
<br/><br/> Cab. Port. NCB (Mining) codes and rules.  Incluye 28 figuras. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topografía
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto