1. Advances in Agronomy;Allison,1955
2. A study of fallout in rainfall collections from March through July 1956;Collins,1957
3. The origin of atmospheric nitrous oxide;Goody;Q. J. R. Met. Soc.,1953
4. Advances in Agronomy;Harmsen,1955
5. The biochemistry of the terrestrial atmosphere;Hutchinson,1954