| Harthoorn, A.M., 1963. Ataractic, hypnotic and narcotic mixtures for the capture and handling of large wild animals. British Veterinary Journal 119: 47-63
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| Harthoorn, A.M., 1962. The capture and relocation of the white (square-lipped) rhinoceros, Ceratotherium simum simum, using drug-immobilizing techniques, at the Umfolozi Game reserve, Zululand, Natal. Lammergeyer 2 (2): 1-9, figs. 1-2, table 1
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| Harthoorn, A.M., 1962. Capture of the white (square-lipped) rhinoceros Ceratotherium simum simum (Burchell) with the use of drug immobilization technique. Canadian Journal of Comparative Medicine 26: 203-208, fig. 1, tables 1-3
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| Harthoorn, A.M., 1961. Methods of control of wild animals with the use of drugs, with special reference to therapeutic and veterinary aspects. International Zoo Yearbook 2: 302-307
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