1. Aaronson, T. 1971. A tour of Vietnam. Environment 13:23–43.
2. Ashton, F.M. and A.S. Crafts, 1973. Mode of action of herbicides. Wiley-Interscience, New York, USA.
3. Audus, J.L. 1976. Herbicides, I. Academic Press, New York, USA.
4. Bird, E.C.F. 1971. Mangroves as land builders. Victorian Naturlist 88:189–197.
5. Boffey, P.M. 1971. Herbicides in Vietnam: AAS study finds widespread devastation. Science 171:43–47.