Whittaker, E. T.  1873-1956. <br/><br/>
The calculus of observations;  a treatise on numerical mathematics / 
by E. T. Whittaker and G. Robinson. 
 - 4th ed. 
 - London and Glasgow,  Blackie & Son  1985 
 - xvi, 395 p.  tables (1 fold.) diagrs., 3 fold. forms.  23 cm 
<br/><br/> "Answers to examples": p. 385-388.  "First print 1924... ninth impression (4th edition) 1944". 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Numerical calculations.
<br/><br/><label>Dewey Class. No.: </label>517.6  / WHC 1958