1. Clarke, R. C. (1981) Marijuana Botany, Berkeley: Ronin Publishing.
2. Mandolino, G. and Ranalli, P. (1999) Advances in biotechnological approaches for hemp breeding and industry, in Advances in Hemp Research. (Ranalli, P.,ed.), Haworth Press, New York, pp. 185–211.
3. Hong, S., Song, S-J., and Clarke, R. C. (2003) Female-associated DNA polymorphisms of hemp (Cannabis sativa L.) J. Indust. Hemp 1, 5–9.
4. Small, E. and Antle, T. (2003) A preliminary study of pollen dispersal in Cannabis sativa in relation to wind direction. J. Indust. Hemp 8, 37–50.
5. Deferne, J-L. and Pate, D. W. (1996) Hemp seed oil: a source of valuable essential fatty acids. J. Int.Hemp Assoc. 3, 1, 4–7.