Tunneling technology newsletter 

<br/><br/> Inicia en 1973, cierra en 1990 
<br/><br/> AESIS quarterly  Coal abstracts  Bibliography and index of ecology  GeoRef 
<br/><br/>Ediciones mar. 1974 - feb. 1990 tambien llamados no. 5 - no. 68 
<br/><br/><label>ISSN: </label>0095-2664 
 = Tunneling technology newsletter 
 = Tunn. technol. newsl. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tunelizacion
<br/><br/><label>LC Class. No.: </label>TA800 
<br/><br/><label>Dewey Class. No.: </label>624.19