TY  - BOOK
AU  - Richards, Robert H.
AU  - Locke, Charles E.,
AU  - Bray, John Leighton,
CN  - TN500
CN  - TN500
CY  - New York [etc.]
DA  - 1925.
ET  - 2d ed., completely rev. and rewritten.
ID  - 18458
KW  - Ore-dressing.
PB  - McGraw-Hill,
PP  - New York [etc.]
PY  - 1925.
T1  - A text book of ore dressing,
TI  - A text book of ore dressing,
ER  -