ITU

التزام بتوصيل العالم

Electrical characteristics of the surface of the Earth

Report P.229-6 (1990)

Status : Withdrawn

Access : Free Download


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English

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777738 bytes 1990-01-01 E 70000 
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783323 bytes 1990-01-01 F 70000 
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814578 bytes 1990-01-01 S 70000