References
- BAILEY, L. (1965) Paralysis of the honey bee, Apis mellifera Linnaeus. J. Invert. Path. 7: 132–140
- BAILEY, L. (1967) The incidence of virus diseases in the honey bee. Ann. appi. Biol. 60: 43–48
- FREE, J. B., NEEDHAM, P. H., RACEY, P. A. & STEVENSON, J. H. (1967) The effect on honeybee mortality of applying insecticides as sprays or granules to flowering field beans. J. Sci. Fd. Agric. 18: 133–138
- JEFFREE, E. P. (1951) A photographic presentation of estimated numbers of honeybees (Apis mellifera L.) on combs in 14 × 8½ inch frames. Bee Wld 32: 89–91
- NEEDHAM, P. H. & STEVENSON, J. H. (1973) The toxicity to foraging honeybees (Apis mellifera) of endosulfan, malathion and azinphosmethyl when applied to flowering oil seed rape (Brassica napus). Ann. appl. Biol. 75: 235–240