Vitamin A content similar in yellow or white butterfat
W. A. Regan
California Agriculture 1(7):1-3. DOI: 10.3733/ca.v001n07p1b.
W. A. Regan is Professor of Animal Husbandry and Animal Husbandman in the Experiment Station. Davis.
Not available – first paragraph follows:
A conclusion drawn in error some thirty years ago misled the milk consuming public, and the dairymen followed suit.