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Understanding and evaluating educational research / Jean Royer Dyer.
- 370.78 D9961
- Dyer, Jean Royer, 1941-
- Addison-Wesley Pub. Co.,
- c1979.
- Reading, MA :
-
Introduction to the mathematics of population with revisions / Nathan Keyfitz.
- 304.6015118 K445 1977
- Keyfitz, Nathan,
- Addison-Wesley Pub. Co.,
- 1977. ©1968
- Reading, Mass. :