Haarla, Rihko. <br/><br/>
Forest road terminology, classes and standards / 
Rihko Haarla. 
 - [s.l.] :   [s.n.],   [n.d.]. 
 - 203 p. :   ill. ;   28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Forest surveys.<br/> Photographic surveying.
<br/><br/><label>Dewey Class. No.: </label>634.93 HAA