Swanson, 1972. J. Dairy Sci., 55: 1763-1767 Document reference Swanson, E. W., 1972. Effect of dietary iodine on thyroxine secretion rate of lactating cows. J. Dairy Sci., 55: 1763-1767Web http://dx.doi.org/10.3168/jds.S0022-0302(72)85755-2Citation key Swanson, 1972