References
- Gochfeld , M . 2005 . Chronological history of occupational medicine . J Occup Environ Med. , 47 : 96 – 114 .
- Hunter , D. 1974 . The Diseases of Occupations , 5th ed , London : Engling Universities Press .
- White , K D . 1970 . Roman farming , London : Thames & Hudson .
- Rosner , E . 1955 . Die Lahmheit des Hephaistos . Forschungen und Fortschritte. , 29 : 362 – 363 .