Hald, A <br/><br/>
Decomposition of a series of observations :  trend a periodic movement and a stochastic variable 

 -  G.E.C Gads forlag copenhagen,  1948 
 - 134p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Observations
<br/><br/><label>Dewey Class. No.: </label>311.2 HAL