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Ghosal, Ratna and Kalaivanan, N and Sukumar, Raman and Seshagiri, Polani B (2012) Assessment of estrus cyclicity in the Asian elephant (Elephas maximus) by measurement of fecal progesterone metabolite 5 alpha-P-3OH, using a non-invasive assay. In: General and Comparative Endocrinology, 175 (1). pp. 100-108.
