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Norval, R.A.I. ,  Peter, T.F. ,  Sonenshine, D.E. ,  Burridge, M.J. ,  [Responses of the ticks Amblyomma hebraeum and A. variegatum to known or potential components of the aggregation-attachment pheromome. III. Aggregation] ,  Responses of the ticks Amblyomma hebraeum and A. variegatum to known or potential components of the aggregation-attachment pheromome. III. Aggregation

Perry, Brian D. ,  Lessard, P. ,  Norval, R.A.I. ,  Kundert, K. ,  Kruska, R.L. ,  [Climate and vegetation on the distribution of the tick Rhipicephalus appendiculatus in Africa] ,  Climate and vegetation on the distribution of the tick Rhipicephalus appendiculatus in Africa

Norval, R.A.I. ,  [The ticks of Zimbabwe. III. Rhipicephalus evertsi evertsi] ,  The ticks of Zimbabwe. III. Rhipicephalus evertsi evertsi

Norval, R.A.I. ,  [The epidemiology of heartwater] ,  The epidemiology of heartwater

Norval, R.A.I. ,  Perry, Brian D. ,  Meltzer, M.I. ,  [Factors affecting the distribution of the ticks Amblyomma hebraeum and Amblyomma variegatum in Zimbabwe. Implication of reduced acaricide usage] ,  Factors affecting the distribution of the ticks Amblyomma hebraeum and Amblyomma variegatum in Zimbabwe. Implication of reduced acaricide usage

Norval, R.A.I. ,  Perry, Brian D. ,  [The introduction, spread and subsequent disappearance of the Brown Ear tick (Rhipicephalus appendiculatus) from the southern Lowveld of Zimbabwe] ,  The introduction, spread and subsequent disappearance of the Brown Ear tick (Rhipicephalus appendiculatus) from the southern Lowveld of Zimbabwe

Norval, R.A.I. ,  Perry, Brian D. ,  Hargreaves, S.K. ,  [Tick and tick-borne disease control in Zimbabwe: What might the future hold] ,  Tick and tick-borne disease control in Zimbabwe: What might the future hold

Young, A.S. ,  Dolan, T.T. ,  Morzaria, S.P. ,  Mwakima, F.N. ,  Norval, R.A.I. ,  Scott, J. ,  Sherriff, A. ,  Gettinby, G. ,  [Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva] ,  Factors influencing infections in Rhipicephalus appendiculatus ticks fed on cattle infected with Theileria parva

Norval, R.A.I. ,  Perry, Brian D. ,  Gebre-Ab, F. ,  Lessard, P. ,  [East Coast fever. A problem of the future for the horn of Africa?] ,  East Coast fever. A problem of the future for the horn of Africa?

Lessard, P. ,  L'Eplattenier, R. ,  Norval, R.A.I. ,  Kundert, K. ,  Dolan, T.T. ,  Croze, H. ,  Walker, J.B. ,  Irvin, A.D. ,  Perry, Brian D. ,  [Geographic information systems for studying the epidemiology of cattle diseases caused by Theileria parva] ,  Geographic information systems for studying the epidemiology of cattle diseases caused by Theileria parva