DR SHIV KUMAR RAGHUWANSHI, and DR SAPNA RAGHUWANSHI M.S. “COMPARATIVE RESULTS OF ENDOSCOPIC VERSUS EXTERNAL DACRYOCYSTORHINOSTOMY FOR ACQUIRED NASO-LACRIMAL DUCT OBSTRUCTION”. International Journal of Pharma and Bio Sciences 4, no. 4 (December 31, 2013): 16–22. Accessed July 23, 2026. https://ijpbs.net/index.php/journal/article/view/2830.