Nwokolo et al., 1976. Poult. Sci., 55 (6): 2217-2221 Document reference Nwokolo, E. ; Bragg, D. B. ; Kitts, W. D., 1976. A method for estimating the mineral availability in feedstuffs. Poult. Sci., 55 (6): 2217-2221Web https://doi.org/10.3382/ps.0552217Citation key Nwokolo et al., 1976