Watson, R., & Tippet, C. (1981). The static model sampling strip for investigating observer bias in aerial surveys. International Livestock Centre for Africa.
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Cita Chicago Style (17a ed.)
Watson, R.M, y C.I Tippet. The Static Model Sampling Strip for Investigating Observer Bias in Aerial Surveys. International Livestock Centre for Africa, 1981.
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Cita MLA (9a ed.)
Watson, R.M, y C.I Tippet. The Static Model Sampling Strip for Investigating Observer Bias in Aerial Surveys. International Livestock Centre for Africa, 1981.
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