TY  - BOOK
AU  - Dick, Walter.
AU  - Hagerty, Nancy.
TI  - Topics in measurement: reliability and validity 
U1  - 530.8 DIC 
PY  - 1971///
CY  - New York
PB  - McGraw-Hill Book Co.
KW  - Physics
N1  - Includes bibliographical references (p. 181-184) and index
ER  -