TY  - SER
AU  - Saoji Ajeet 
AU  -  Choudhury Kantibhushan
TI  - Cross sectional study of effect of smoking on
KW  -   exposure
KW  -   Obstructive impairment
KW  -  cotton dust
KW  -  Restrictive impairment
KW  - Spinning mill worker
ER  -