TY  - BOOK
AU  - KRAEMER,Helena Chmura
AU  - Sue Thiemann
TI  - How many subject?: statistical power analysis in research
SN  - 0803929498
U1  - 001.4 
PY  - 1987///
CY  - London
PB  - Sage Publication
N1  - Includes bibliographical references and index
ER  -