TY  - BOOK
AU  - Szechy,Karoly
TI  - The art of tunnelling / 
U1  - 624.19 
PY  - 1966///
CY  - Budapest : 
PB  - Akademiai Kiado, 
KW  - Tunneling
N1  -  Translation of Alagutepitestan;  Includes bibliographical references
ER  -