Duagherty, Richard Fitz Gerald, Brain P, ed <br/><br/>
Data collection 

 - London  Oxford university press  1974 
 - 70 p.; 22cm. 
 - Science in geography .
<br/><br/><label>ISBN: </label>199130663 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Collecting information<br/>Geography - research<br/>Sampling