books.google.com - Starting at the dawn of science, History of Industrial Gases traces the development of gas theory from its Aristotelian roots to its modern achievements as a global industry. Dr. Almqvist explores how environmental protection, geographical areas, and the drive for higher purity and efficiency affected...http://books.google.com/books/about/History_of_industrial_gases.html?id=OI0fTJhydh4C&utm_source=gb-gplus-shareHistory of industrial gases