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- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- May 1957
- SuDoc number:
- NS 1.11:4
- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- Apr. 1957
- SuDoc number:
- NS 1.11:3
- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- Mar. 1957
- SuDoc number:
- NS 1.11:2
- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- Dec. 1956 [published 1957)
- SuDoc number:
- NS 1.11:1