TY  - BOOK
AU  - Persson,Per-Anders
AU  - Holmberg,Roger
AU  - Lee,Jaimin
TI  - Rock blasting and explosives engineering/ 
SN  - 0-8493-8978-X
AV  - TA 748 .P46 1993
PY  - 1994///
CY  - Boca Raton: 
PB  - CRC Press, 
KW  - Blasting
KW  - Rock excavation
N1  - Includes bibliographical references and index
ER  -