Changes

Feeney RE. Polar journeys: the role of food and nutrition in early exploration. Washington, DC: American Chemical Society, and Fairbanks: University of Alaska Press, 1997.

Feeney RE. Polar journeys: the role of food and nutrition in early exploration. Washington, DC: American Chemical Society, and Fairbanks: University of Alaska Press, 1997. DIRAC  TX601 .F44 1997

Lewis, R. W., and J. A. Lentfer. 1967. The vitamin A content of polar bear liver: range  

Lewis, R. W., and J. A. Lentfer. 1967. The vitamin A content of polar bear liver: range  

Rodahl, K. 1949. Toxicity of polar bear liver.  Nature 164:530.  

Rodahl, K. 1949. Toxicity of polar bear liver.  Nature 164:530.  

Rodahl, K., and T. Moore. 1943. The vitamin A content and toxicity of bear and seal liver. Biochemical Journal 37:166­68.

Rodahl, K., and T. Moore. 1943. The vitamin A content and toxicity of bear and seal liver. Biochemical Journal 37:166­68.