TY  - GEN
TI  - ASSEMBLEE GENERALE DE TORONTO, 3-14 SEPT, 1957
U1  - 551.49 
PY  - 1958///
CY  - Gentbrugge (Belgique)
PB  - 
KW  - Erosion
KW  - Water, Underground
KW  - Snow
N1  - Includes Bibliography
ER  -