TY  - BOOK
AU  - Whitaker,John Wilfrid
AU  - Willett,H.L.
TI  - Colliery explosions and recovery work : : a textbook for candidates for the first-class managers' and under-managers' certificates / 
T2  - Pitman's mining certificate series
PY  - 1946///
CY  - London : 
PB  - Pitman & sons, 
KW  - Explosiones
KW  - spines
KW  - Accidentes
KW  - Minas (excavaciones)
KW  - Situaciones de peligro
N1  - Referencias bibliográficas al pie de página
ER  -