TY  - BOOK
ED  - International Commission of Snow and Ice.
ED  - UNESCO.
TI  - Perennial ice and snow masses; : a guide for compilation and assemb lage of data for a world inventory
PY  - 1970///]
CY  - Paris : 
PB  - UNESCO/IASH , 
KW  - Ice
KW  - Snow
N1  -  At head of title: A contribution to the International hydrological d ecade
ER  -