by E R Ørskov

Chalcombe 1998 2nd ed.

Available at 1 libraries

E.R. Orskov著 ; 山崎淳, 山崎ふじみ共訳

デーリィマン社 1991.5 デーリィマン臨時増刊

Available at 8 libraries

edited by E.R. Ørskov

Elsevier Science Publishers , Distributors for the U.S. and Canada, Elsevier Science Pub. Co. 1988 World animal science B . Disciplinary approach ; 4

Available at 25 libraries

O.R. [i.e. E.R.] Ørskov

Academic Press 1982

Available at 17 libraries