00395nam a2200133Ia 4500008004100000040001700041082003200058110004600090245003000136260002900166300001600195500002600211650002400237190329s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta523.01880954083bI39I  aIndian Institute of Geomagnetism (Colaba) 0aIndian magnetic data 1998  aMumbaibthe Authorc1997  axxxii,219p.  alibrary has also 1999  aMagnetic data-India