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- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- [July 1967.]
- SuDoc number:
- NS 1.13:F 11
- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- [1967.]
- SuDoc number:
- NS 1.13:Ec 7
- Corporate/Agency Authors:
- National Science Foundation
- Publisher:
- National Science Foundation
- Date:
- Mar. 1963
- SuDoc number:
- NS 1.13:P 96/963