1. Costs of mandatory cannabis testing in California;P Valdes-Donoso;Calif Agric,2019
2. Public Law 91–513. to amend the Public Health Service Act and other laws to provide increased research into, and prevention of, drug abuse and drug dependence; to provide for treatment and rehabilitation of drug abusers and drug dependent persons; and to strengthen existing. 84 Stat. the 91st U. 1971;
3. Cannabis, pesticides and conflicting laws: The dilemma for legalized States and implications for public health;D Stone;Regul Toxicol Pharmacol,2014