TY  - BOOK
ED  - United Nations Educational, Scientific and Cultural Organization.UNESCO
TI  - The surveillance and prediction of volcanic activity: a review of methods and techniques / 
U1  - 551.21 
PY  - 1971///.
CY  - Paris: 
PB  - Unesco, 
KW  - Volcanic activity prediction
N1  - Includes bibliographical references (p. 12-13, 45, 72-74, 101, 123-124, 130, 136-137, 143-144, 166)
ER  -