英文文献：Toward A National Program Of State And Regional Agricultural Safety And Health Statistics
英文文献作者：Fritsch, Conrad F.,Zimmer, John M.
英文文献摘要：
Prior to the passage of the Occupational Safety and Health Act of 1970, farm and ranch safety efforts placed only minor.emphasis on distinctions between work related and non-work related accidents,/ injuries and illnesses. Direct incentives were not present to encourage such differentation and problems were treated on a worst-first basis. A long-run strategy for reducing occupational injuries and illnesses was not articulated.