Vries, Pieter G. de  <br/><br/>
Sampling theory for forest inventory : a teach yourself course / 
Pieter G. de Vries. 
 - New York :   Springer, Verlag,   1986. 
 - x, 399 p. 
<br/><br/><label>ISBN: </label>03540170669 0387170669 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INVENTARIO FORESTAL