The biological activity of retinoic acid in the domestic fowl and the effects of vitamin A deficiency on the chick embryo

J. N. Thampson, J. McC. Howell, G. A. J. Pitt, Catherine I. McLaughlin
1969 British Journal of Nutrition  
doi:10.1079/bjn19690056 pmid:5804409 fatcat:lhy2u5r3wrd7jero6hblqfcnse