TY - BOOK AU - Acker,Duane TI - Animal science and industry SN - 0130376558 AV - SF61 .A3 1971 U1 - 636 PY - 1971/// CY - Englewood Cliffs, New Jersey PB - Prentice-Hall KW - Animal industry KW - Livestock N1 - Includes bibliographical references ER -