1. GOREN, R., and MONSELISE, S. P. (1969). Studies on the utilization of herbicides in citrus orchards in Israel as related to efficiency.Proc. 1st int. Citrus Symp., Riverside, 483–92.
2. LEYDON, R. F. (1969). Development of the herbicide program in Texas.Proc. 1st int. Citrus Symp., Riverside, 473–7.
3. RYAN, G. F. (1969). The use of chemicals for weed control in Florida citrus.Proc. 1st int. Citrus Symp., Riverside, 467–72.
4. TORRISI, S. (1969). Development and use of herbicides in Sicilian citrus orchards as a means for non-tillage weed control.Proc. 1st int. Citrus Symp., Riverside, 479–82.