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Introduction
Pages 5-7

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From page 5...
... At present we have, and we have had for some l5 years, an excellent global seismic network, the Worldwide Standardized Seismograph Network (WWSSN) , which has done an admirable job of providing needed basic data.
From page 6...
... (b) Sagging roof due to column failure at the Agricultural University from the earthquake at Lima, Peru, on October 3, l974.
From page 7...
... , mining, construction, and insurance, for example -- would benefit directly from improved fundamental knowledge of earthquake sources and occurrences and of the general and detailed structure and dynamics of the earth. Seismologists of the United States have long cooperated with those of other countries through exchange of earthquake data and research results.


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