Perla, Ronald I. <br/><br/>
Avalanche handbook / 
Ronald I. Perla and M. Martinelli, Jr. 
 - [Washington] :  U.S. Dept. of Agric. Agric. Hanndb.,  1976. 
 - 238 p. :  ill. ;  26 cm. 
 - Agriculture handbook ; 489 .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 231-233. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Avalanches--Handbooks, manuals, etc.