1. Alton, M.S. and M.O. Nelson: Food of the Pacific hake, Merluccius productus, in Washington and northern Oregon coastal waters. Circ. Fish Wildl. Serv., Wash. 332, 35?52 (1970)
2. Alverson, D.L. and H.A. Larkins: Status of knowledge of the Pacific hake resource. Rep. Calif. coop. oceanic Fish. Invst. 13, 24?31 (1969)
3. Beasley, T.M., T.A. Jokela and R.J. Eagle: Radionuclides and selected trace elements in marine protein concentrates. Hlth Phys. 21, 815?820 (1971)
4. Best, E.A.: Contribution to the biology of the Pacific hake, Merluccius productus (Ayres). Rep. Calif. coop. oceanic Fish. Invest. 9, 51?56 (1963)
5. Bowen, H.J.M.: Trace elements in biochemistry, 241 pp. New York: Academic Press 1966