Boylston, R. P., Jr. (1990). Managing safety and health programs. Van Nostrand Reinhold.
Dyfyniad Arddull ChicagoBoylston, Raymond P., Jr. Managing Safety and Health Programs. New York: Van Nostrand Reinhold, 1990.
Dyfyniad MLABoylston, Raymond P., Jr. Managing Safety and Health Programs. Van Nostrand Reinhold, 1990.
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