297
earth's crust………………………………………………………..
63
12.3. Position and definition of layers of the earth 's crust……………...
68
12.4. The importance of the conditions of occurrence of rocks………...
71
12.5. Hypothesis about the causes of tectonic movements formed in the
earth's crust………………………………………………………..
72
13.
Seismic processes and earthquakes. Construction work in
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