TY  - BOOK
AU  - Norris,Donald Kring
TI  - Structural conditions in Canadian coal mines
AV  - QE185 .A43 no. 44
PY  - 1958///
CY  - Ottawa
PB  - E. Cloutier, Queen's printer
KW  - Coal mines and mining
KW  - Canada
N1  - Part of illustrative matter folded in pocket; Bibliograhy: p. 10-11
ER  -