1. Abundance of the elements, areal averages, and geochemical cycles;Barth;Geochim. et Cosmochim. Acta,1961
2. The data of geochemistry;Clark;U.S. Geol. Surv. Bull.,1924
3. Occurrence of minor elements in water;Durum;U.S. Geol. Surv. Circ.,1960
4. Recent estimates of the abundances of the elements in the Earth's crust;Fleischer;U.S. Geol. Surv. Circ.,1953
5. Marine geochemistry. I—Chemical scavengers of the sea;Goldberg;J. Geol.,1954