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The immunisation of rams against ovine brucellosis
An extensive survey has since shown this infection to be so prevalent in flocks throughout the Republic that effective immunization would offer the only satisfactory method of control.
Spatiotemporal dynamics of free-living stages of a bacterial parasite of zooplankton
Overall, a study of a common parasite of Daphnia reveals the potential importance of free-living stages to epidemic dynamics, and suggests that it is important to consider environmental reservoirs when studying disease dynamics.
Cash crops can combat low grape prices – Part 2 : crops
As reported in the previous issue, farmers in the Olifants River Valley have been forced to seek alternative means of generating income due to wine grape prices remaining fairly static over the past