His Majesty`s Stationary Offic,  <br/><br/>
Administraty Hand Book Of W Telegraphy B R 229 

 - Kottayam  NATIONAL BOOKSTALL  1946 
 - 440p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural sciences & mathematics--Physics--Astronomy & allied sciencesSpecific celestial bodies & phenomena
<br/><br/><label>Dewey Class. No.: </label>523.018  / HIS-A