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- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Apr. 12, 1938
- SuDoc number:
- C 13.16:520
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Apr. 1, 1938
- SuDoc number:
- C 13.10:256a/pt.2/amdt.1
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 16, 1938
- SuDoc number:
- C 13.16:519
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 16, 1938
- SuDoc number:
- C 13.16:518
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 14, 1938
- SuDoc number:
- C 13.16:517
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 8, 1938
- SuDoc number:
- C 13.16:516
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Revised Mar. 8, 1938. [1938.]
- SuDoc number:
- C 13.16:515
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 7, 1938
- SuDoc number:
- C 13.16:514
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 1, 1938
- SuDoc number:
- C 13.4:417
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- Mar. 1, 1938
- SuDoc number:
- C 13.16:256a/pt.5A