1. Lead poisoning in cattle and horses following long-term exposure to lead;Aronson;Am. J. vet. Res.,1972
2. Lead concentration in the San Francisco Bay Area;Bay Area Air Pollution Control District;Information Bulletin,1972
3. Contamination of vegetation by tetraethyl lead;Cannon;Science, N.Y.,1962
4. Lead accumulation in roadside soil and grass;Chow;Nature, Lond.,1970
5. Traffic Statistics—Santa Clara Country;Engineering Design Division-Traffic Section,1971