Richard W Small

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The sheep ked Melophagus ovinus is a member of the parasitic Dipteran family Hippoboscidae; it was a widespread ectoparasite of sheep that was of veterinary importance until the introduction of effective pesticides. Since then it has become of less concern and may have become a relatively uncommon species through much of its former range. Changes in(More)
The relative resistance of Manx Loaghtan, Shetland and Southdown sheep to naturally acquired gastrointestinal nematode infection was assessed over a ten week period. Thirty shearling ewes, ten from each of the three breeds, were co-grazed on an infective pasture. The animals were initially treated with an anthelmintic to minimise previous nematode(More)
Teenage pregnancy is a growing social problem in the United States. Past interventive failures and current research suggest new directions for primary prevention. A comprehensive prevention program is outlined, and training techniques based on a cognitive-behavioral approach are proposed to help adolescents acquire skills necessary to avoid unwanted(More)
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