A simposium presented at the winter meeting american society for testing and materials denver, colo., 2-7 feb. 1969. 

 - 198 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocas--Pruebas<br/>Mecánica de rocas--Congresos
<br/><br/><label>LC Class. No.: </label>TA706  / S941969