doi:10.7916/d8-r4ye-e215Signboard Near Telecommunications Building Depicting Illustrated Instructions for Proper Usage of Gas Masks, with Writing in Tibetan and Chinese, Lhasa, 1994Tibet Information Networkphotographsstill imageSigns and signboardsSafety measuresTibetansLhasa (China)Photograph of a signboard near a telecommunications building in Lhasa, depicting instructions written in Tibetan and Chinese, and illustrated, for the required and proper usage of gas masks.