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Current widowhood : myths & realities / Helena Znaniecka Lopata.
- 305.489654 L8641
- Lopata, Helena Znaniecka, 1925-2003,
- Sage Publications,
- Thousand Oaks, Calif. :
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How many subjects? : statistical power analysis in research / Helena Chmura Kraemer and Sue Thiemann ; foreword by Victor H. Denenberg.
- 001.422 K891
- Kraemer, Helena Chmura,
- Sage Publications,
- Newbury Park :