1. American Association for the Advancement of Science;American Conservation,1965
2. Chemical mutagenesis in animals;Auerbach;Abhand. Deut. Akad. Wiss. Berlin,1960
3. Industrialization, evolution and the development of heavy metal tolerance in plants;Bradshaw,1965
4. Effects of air pollution on vegetation;Brandt,1968
5. Comparative rates of spontaneous mutation;Drake;Nature,1969