Stielt, W. M. <br/><br/>
Comparative cone production in young red pine planted at different spacing 

 - Ottawa :  Canadian Forestry Service. Departament of the Environment,  1971 
 - 8 p.  : gráfs. 
<br/><br/><label>LCCN: </label>57975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Árboles--Espaciamiento.<br/>Conos.<br/>Pinus resinosa.