TY  - BOOK
AU  - Jayasuriya,J.E.
AU  - Fleming,C.M.
TI  - Statistical calculations : for teachers
U1  - 519 JAY  
PY  - 1959///.
CY  - Madras : 
PB  - Macmillan and Co., Limited, 
KW  - Educational tests and measurements
KW  - Statistics
KW  - Education
ER  -