1. The sheep with two heads Publication: [between 1820 and 1840] Subject(s): Congenital AbnormalitiesSheep
2. Trouble sleeping?: don't be sheepish-- Publication: Rockville, Md. : National Program on Insomnia and Sleep Disorders, U.S. Dept. of Health and Human Services, Public Health Service, [198-?] Subject(s): Sleep Initiation and Maintenance DisordersSheep
