| Abstract: |
English summary on page 60 as follows: To study the application of the change of the components I, D and Ht of the earth's magnetic field to archaeological research is a new trend of geophysics. This method is finding wide acknowledgment in several countries. The magneto-archaeology Laboratory was founded at the Geology General Department in 1978. It paved the way for the expansion of magneto-archaeological research in Vietnam. Our country is close to the magnetic equator. This special feature provides the advantage for studying the function D= f(t). On this basis, it most likely that we will be able to offer the world original discoveries in the field of magneto archaeological research.
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