Fritz, Madeleine A.  1896- <br/><br/>
Bryozoa (mainly Trepostomata)  from the Ottawa formation (Middle Ordovician) of the Ottawa-St. Lawrence lowland. 

 - Ottawa,  E. Cloutier, Queen's printer,  1957. 
 - v, 75 p.  30 plates, table. 
<br/><br/>"Selected bibliography": p. 41. 
<br/><br/><label>LCCN: </label>gs 58000075  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bryozoa, Fossil.<br/>Paleontology--Canada--Ottawa-St. Lawrence lowland.<br/>Paleontology--Ordovician.
<br/><br/><label>LC Class. No.: </label>QE185  / .A43 no. 42