His Protein nutrition in ruminants, 1982: t.p. (O. R. Ørskov, Appl. Res. Dept., Rowett Res. Inst., Aberdeen) pref., etc. (E. R. Ørskov) Feed science, 1987: CIP t.p. (E.R. Ørskov) data sheet (Ørskov, Egil Robert; b. 5/24/34)
Feed science / edited by E.R. Ørskov
Amsterdam ; Tokyo : Elsevier Science Publishers. - New York, NY : Distributors for the U.S. and Canada, Elsevier Science Pub. Co. , 1988