Wangmo, Chhimi. <br/><br/>
Prevalence and associated factors of pterygium at the opthalmology outpatient department in the National Referral Hospital, Thimphu. 

 - Thimphu :  Khesar Gyalpo University of Medical Sciences of Bhutan,  2019. 
 - vii, 53 p. :  ill. ;  30 cm.