Hacquébard, Piet Albertus. <br/><br/>
A Carboniferous spore assemblage,  in coal from the South Nahanni River area, Northwest Territories, 
by P.A. Hacquébard and M.S. Barss. 
 - Ottawa,  E. Cloutier, Queen's printer,  1957. 
 - 63 p.  6 plates, maps, diagrs., table. 
<br/><br/> At head of title: Canada.  Dept. of Mines and Technical Surveys. 
<br/><br/>Bibliography: p. 49-50. 
<br/><br/><label>LCCN: </label>gs 58000064  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--Northwest Territories.
<br/><br/><label>LC Class. No.: </label>QE185  / .A43 no. 40