Aggregate resources :  a global perspective / 
edited by Peter T. Bobrowsky 
 - Rotterdam :  A. A. Balkema,  2000 
<br/><br/><label>ISBN: </label>9054106751  RM493.90 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aggregates (Building materials)<br/>Sand<br/>Gravel