TY  - ADVS
ED  - National Geographic Society (U.S.)
TI  - Earth: the restless planet
PY  - 1973///
PB  - National Geographic Society
KW  - Kilauea Volcano (Hawaii)
KW  - Etna, Mount (Italy)
KW  - Nyiragongo (Congo)
N1  - Also issued as videocassette; Edited from the motion picture entitled The violent earth; With teacher's guide and collateral materials
N2  - Examines the characteristics of three different volcanoes--Hawaii's Kilauea, Mt. Etna in Sicily, and Nyiragongo in Zaire
ER  -