Topping, J. <br/><br/>
Errors of observation and their treatment   
by J. Topping 
 - 4th 
 - London  Chapman & Hall  1972 
 - 119p, incl bibl. & ind. 
<br/><br/><label>ISBN: </label>412210401 
<br/><br/><label>Dewey Class. No.: </label>511.43  / N72