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1.
Introduction to solar terrestrial activity for geomagnetic studies / by W.H. Campbell by Series: NOAA technical report ERL ; no. 218 - ESL 18
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, : U.S. Department of Commerce, 1971
Availability: Items available for loan: National Library of India (1)Call number: U.S. 538.7 C 152.

2.
An introduction to geomagnetic instruments and observing / by W. H. Campbell by Series: Essa technical report ERL 183-ESC 12
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, D. C. : United States Government Printing Office, 1970
Availability: Items available for loan: National Library of India (1)Call number: U.S 538.70973 C 153.

3.
NOAA technical report ERL 244 - SEL 23 : introduction to solar terrestrial activity for geomagnetic studies / W.H. Campbell by
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington : United States Department of Commerce, 1971
Availability: Items available for loan: National Library of India (1)Call number: U.S 538.727 C 153.

4.
NOAA technical report ERL 244 - SEL 23 : introduction to solar terrestrial activity for geomagnetic studies / W.H. Campbell by
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington : United States Department of Commerce, 1971
Availability: Items available for loan: National Library of India (1)Call number: U.S 538.727 C 153.

                                                                           
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