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2
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Social statistics / Hubert M. Blalock, Jr.
- 300.727 B637 1972
- Blalock, Hubert M.,
- McGraw-Hill Book Company,
- [1972] ©1972
- New York :
-
Causal inferences in nonexperimental research / by Hubert M. Blalock.
- 300.15118 B637 1972
- Blalock, Hubert M.,
- Norton Library,
- 1972. ©1964
- New York, NY :