Lachenbruch, Arthur H. <br/><br/>
Mechanics of thermal contraction cracks and ice-wedge polygons in permafrost / 
Arthur H. Lachenbruch. 
 - New York :  Geological Society of America,  1962. 
 - 69 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ice--wedge polygons.<br/>Thermal stresses.