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- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.1:972
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:36/v.2
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- June 1971 [revised] Dec. 1971. 1972
- SuDoc number:
- I 63.10:68
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:(nos.)
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:(nos.)
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:(nos.)
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:(nos.)
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [1972.]
- SuDoc number:
- I 63.10:(nos.)
- Corporate/Agency Authors:
- Coal Research Office and Interior Dept.
- Publisher:
- Coal Research Office
- Date:
- [Nov. 30, 1971 published 1972.]
- SuDoc number:
- I 63.10:(nos.)