TY  - BOOK
AU  - Whittaker,E.T.
AU  - Robinson,George
TI  - The calculus of observations: a treatise on numerical mathematics 
U1  - 517.6 
PY  - 1985///
CY  - London and Glasgow
PB  - Blackie & Son
KW  - Numerical calculations
N1  - "Answers to examples": p. 385-388; "First print 1924... ninth impression (4th edition) 1944"
ER  -