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- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- May 25, 1938
- SuDoc number:
- C 13.16:524
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- May 21, 1938
- SuDoc number:
- C 13.10:523
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- May 21, 1938
- SuDoc number:
- C 13.10:522
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- May 18, 1938
- SuDoc number:
- C 13.16:521
- Corporate/Agency Authors:
- National Bureau of Standards and Commerce Department
- Publisher:
- National Bureau of Standards
- Date:
- May 15, 1938
- SuDoc number:
- C 13.25:13/2/supp.
- 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