Data from the Geomagnetic, Geoelectric and seismological Observation / 
Council of Scientific and Industrial Research National Geophysical Research Institute, Government of India 
 - Hyderabad :  National Geophysical Research Institute,  1969 
 - 83 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetism
<br/><br/><label>Dewey Class. No.: </label>538.8