Gas Mask: A Protective Device

Gas mask is also known as personal protective equipment or PPE. The protective equipment was first invented in ninth century by the Banu Musa brothers in Iraq. A gas mask is a device used to prevent an individual from inhaling harmful gases, toxic chemicals, biological agents, bacteria, viruses, vaporized poisons and microscopic particles.

Source: http://EzineArticles.com/6833334

make girl laugh dating asian women talk to women how to pick up ladies look for women looking for girlfriend flirt with girls approach women body language to attract women dating Russian girls