Annual report of the chemical examiner's department, Bengal, for 1921 / 
Government of Bengal. 
 - Calcutta :  Bengal secretariat book depot  1922 
 - 7p.  31cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technologist-Report 
<br/><br/><label>Dewey Class. No.: </label>660.092  / GOR 1922