Botkin, M. P., 1922- Sheep and wool : science, production and management / M.P. Botkin, Ray A. Field, C. LeRoy Johnson. - Englewood Cliffs, N.J. : Prentice-Hall, 1988. - xi, 451 p. : ill. ISBN: 0138084947 LCCN: 91035049 Subjects--Topical Terms: Sheep.Wool.