OPTICAL SOCIETY OF INDIAAcharya Prafulla Chandra Shikha Prangan Department of Applied Optics & Photonics, 3Rd Floor Calcutta University, JD-2, Sector III, Bidhannagar, Kolkata, West Bengal 700098, India
LOKENATH XEROX CENTRE246, Mahatma Gandhi Rd, Basuri Bagan, Paschim Putiary, Kolkata, West Bengal 700082, India
DRUTI CYBER CAFE41 pally club, Haridevpur, Kolkata, West Bengal 700041, India
Gmj EnterpriseNarayanpur, Gopalpur I, Kolkata, West Bengal 700136, India
Phantom45, Kalupara Ln, Dhakuria, Kalu Para, Kolkata, West Bengal 700031, India
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SHREESTI PRINTERSSANGAM MARKET, , Barasat, Kolkata, West Bengal 700126, India
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Insigniaa35, Durgapur Colony, Block L, New Alipore, Kolkata, West Bengal 700053, India