Ash, Sidney R. <br/><br/>
A high latitude Upper Triassic Flora from the Heiberg Formation, Sverdrup Basin, Arctic Archipelago 

 - Ottawa, Ontario  Geological Survey of Canada  1991 
 - pp. 101-131 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PALEOBOTANICA<br/>TRIASICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ARTICO