TY  - BOOK
AU  - Lehmann, E. L.
AU  - D'Abrera, H. J. M.
TI  - Nonparametrics: : statistical methods based on ranks 
T2  - Holden-Day series in Probability and Statistics
SN  - 0816249966
U1  - 519.537 
PY  - 1975///
CY  - New York
PB  - McGraw-Hill
ER  -