Perennial ice and snow masses;   a guide for compilation and assemb lage of data for a world inventory. 

 - Paris :   UNESCO/IASH ,   [1970] 
 - 59 p. :    illus., maps. ;    27 cm. 
 - Technical papers in hydrology,   1 .
<br/><br/>  At head of title: A contribution to the International hydrological d ecade. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ice.--------<br/>Snow.--------