TY  - BOOK
AU  - Weldon,K.L.
TI  - Statistics : : a conceptual approach 
SN  - 0138458197 :
AV  - QA 276.12 
PY  - 1986///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Statistics
N1  - Includes index; Bibliography: p. 423-424
ER  -