Dyfyniad APA

Unesco. (1971). The surveillance and prediction of volcanic activity: A review of methods and techniques. Unesco.

Dyfyniad Arddull Chicago

Unesco. The Surveillance and Prediction of Volcanic Activity: A Review of Methods and Techniques. Paris: Unesco, 1971.

Dyfyniad MLA

Unesco. The Surveillance and Prediction of Volcanic Activity: A Review of Methods and Techniques. Unesco, 1971.

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