Excerpt from Lectures on General An?sthetics in Dentistry: Advocating Painless Dental Operations by the Use of Nitrous Oxid and Oxygen, Chloroform, Ether, Ethyl Chloride and Somnoform
At the request of Dr; Burton Lee Thorpe, associate editor of Это и многое другое вы найдете в книге Lectures on General An?sthetics in Dentistry (William H. De Ford)