1. Datos sobre la influencia del selenio en la vegetation cuando sustituye el ion súlfurico en el liquido nutritivo de Knop;Awschalom;Rev. Fac. Agron. La Plata,1921
2. Plants poisonous to livestock;Beath;Wyoming Agr. Expt. Sta. Bull. No.,1934
3. Selenium and other toxic minerals in soils and vegetation;Beath;Wyoming Agr. Expt. Sta. Bull. No.,1935
4. The occurrence of selenium and seleniferous vegetation in Wyoming. II. Seleniferous vegetation;Beath;Wyoming Agr. Expt. Sta. Bull. No.,1937
5. Selenium distribution in and seasonal variation of type vegetation occurring on seleniferous soils;Beath;Am. J. Pharm. Assoc.,1937