Goverment observatory <br/><br/>
Magnetical meteorological and seismological observations 

 - Bobmay  Govt. Central Press       1990 
 - vp ill. 
<br/><br/><label>ISBN: </label>0000000000 (hbk) SL017602 
<br/><br/><label>Standard No.: </label>192752 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>B, N0 RR