Twently seventh annual report of the chief engineer public health department bengal for the year ending 31st december 1939/ 
Government of Bengal 
 - Alipore:  Bengal Government press  1940 
 - 42p.  20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public Health
<br/><br/><label>Dewey Class. No.: </label>362.10954  / GOT1940