References
- Canadian Food and Drug Directorate . 1969 . Analytical methods for pesticide residues in foods , Canada : The Department of National Health and Welfare . The Queen's Printer, Ottawa.
- Statutory Regulations . 1976 . Food and Drug Regulations 1973 Amendment No. 2. 1976/68.
- U.S. Food and Drug Administration . 1969 . Pesticide Analytical Manual. Volumes I and II , U.S. Department of Health, Education and Welfare .
- Wort , D. J. 1964 . “ Responses of plants to sublethal concentrations of 2,4-D, with and without added minerals ” . In The Physiology and Biochemistry of Herbicides , Edited by: Audus , L. J. 335 – 342 . New York : Academic Press . In