TY  - BOOK
AU  - Gregory,Cedric Errol
TI  - Explosives for north american engineers
T2  - Series on rock and soil mechanics
AV  - TA748 G73
PY  - 1973///
CY  - Clausthal, Ger.
PB  - Trans Tech Publications
KW  - Voladuras (Minería)
KW  - Explosivos
ER  -