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User manual Samsung ML-1640 (English - 83 pages)
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SPS ML1640 / 1640 / ML-1640 Black Toner Cartridge ( Pack of 2 ) for Samsung Printer Black Ink Toner - SPS : Flipkart.com
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DAKSHA MLT 108s Toner Cartridge Compatible for Samsung 108 / MLT-D108S Toner Cartridge for Use in ML-1640, ML-2240 Printers Single Color Toner : Amazon.in: Computers & Accessories