Hewitt, C. Gordon <br/><br/>
Regulacions under the destructive insect and pest act :   with instructions to importers and exporters of trees, plants and other nursery stock / 
by C. Gordon Hewitt 
 - Ottawa :   Department of Agriculture 
 - 12 p. 
 - Circular; 10 .
<br/><br/><label>LCCN: </label>205552 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arboles -- plagas <br/>Viveros forestales