TY  - GEN
AU  - Dick, Walter
AU  - Hagerty, Nancy
TI  - Topics in measurement : : reliability and validity 
SN  - 0070167834
U1  - 530.8  
PY  - 1971///
CY  - New York : 
PB  - McGraw - Hill
KW  - Testing and measurement
N1  - Includes bibliographical references and index
ER  -