Ode to Koop.
Slobodien
H D
HD
D049669:History, 16th Century; D049670:History, 17th Century; D006801:Humans; D010947:Plants, Toxic; D012907:Smoking / Q000266:history; D000074606:Smoking Prevention; D014026:Nicotiana; D014028:Tobacco Smoke Pollution / Q000517:prevention & control*
D014028:Tobacco Smoke Pollution