Patents for inventions: abridgments of specifications. 30,000-35,000: group lxii: wireless signalling and controlling

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Bibliographic Details
Main Author: India. Government of India
Format: Book
Language:English
Published: Calcutta: Manager of Publications
Subjects:
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082 |2 21st ed.  |a 547  |b IND/P 
100 |a India. Government of India 
245 |a Patents for inventions: abridgments of specifications. 30,000-35,000:  |b group lxii: wireless signalling and controlling 
260 |a Calcutta:  |b Manager of Publications 
300 |a 187p. 
653 |a Physics 
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999 |c 43760  |d 43760