by Littlefield, N.A., Sheldon, W.G., Allen, R., Gaylor, D.W.
Published in Food and chemical toxicology (1990)

by Hass, B.S. (FDA, Jefferson, AR.), Littlefield, N.A
Published in Lab animal (01.10.1995)

by Littlefield, N.A, Gaylor, D.W, Blackwell, B.N, Allen, R.R
Published in Food and chemical toxicology (1989)

by Littlefield, N.A., Gaylor, D.W., Blackwell, B.-N., Allen, R.R.
Published in Food and chemical toxicology (1989)

by LITTLEFIELD, N. A, GAYLOR, D. W, BLACKWELL, B.-N, ALLEN, R. R
Published in Food and chemical toxicology (01.07.1989)

by Littlefield, N.A., Gaylor, D.W., Blackwell, B.-N., Allen, R.R.
Published in Food and chemical toxicology (1989)

by Littlefield, N A, Fullerton, F R, Poirier, L A
Published in Chemico-biological interactions (1991)

by Singh, B, Littlefield, N.A, Salunkhe, D.K
Published in Amer Soc Hort Sci Proc (1970)

by Littlefield, N A, Gaylor, D W
Published in Journal of toxicology and environmental health (1985)

by Greenman, D L, Oller, W L, Littlefield, N A, Nelson, C J
Published in Journal of toxicology and environmental health (01.03.1980)

by Littlefield, N A, Wolff, G L, Nelson, C J
Published in Journal of toxicology and environmental health (1985)

by Littlefield, N.A, Gaylor, D.W, Blackwell, B.N, Allen, R.R. (Food Drug Admin., Nat. Center Toxicological Res., Jefferson, AR 72079 (USA))
Published in Food and Chemical Toxicology (UK) (1989)

by Schieferstein, G.J., Littlefield, N.A., Gaylor, D.W., Sheldon, W.G., Burger, G.T.
Published in European journal of cancer & clinical oncology (01.01.1985)