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4. Genetic resistance to helminths;Altaif;The influence ofbreed and haemoglobin type on the response of sheep to primary infections with Haemonchus contortus. Parasitology,1978
5. Genetic resistance to helminths;Altaif;The influence ofbreed and haemoglobin type on the response of sheep to reinfection with Haemonchus contortus. Parasitology,1978