Ray V. Herren Science of Animal Agriculture. Ed 3 - 3rd Ed - USA Thomson Learning Inc. 2007 - 384p Ray V. Herren: Science of Animal Agriculture. Ed 3. (3rd Ed) USA. Thomson Learning Inc., 2007. 1-4018-7099-6--(636HER) ENGLISH ISBN: 1-4018-7099-6 Dewey Class. No.: 636 / HER