- Seller's Description:
- 1969 National Bureau of Standards. NSRDS-NBS 3, Sections 1, 2, 3. 3 issues. 4tos., about 40pp., about 60pp., about 15pp., original printed wraps. A few Depository Library stamps. Good, corners bumped, wraps a bit soiled, lightly worn. 3 issues.
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