Die hematologiese profiel van persone werksaam by 'n koolteeraanleg van 'n petrochemiese fabriek / Aletta Elisabeth Snyman
BACKGROUND: Oxygen is essential for life. If any factor inhibits the body's usage of oxygen, the body will react with a variety of feedback systems to retain life. When a person stays in an area with a slightly lower oxygen concentration for a long period, his body will react with an increase i...
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Potchefstroom University for Christian Higher Education
2009
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| Online Access: | http://hdl.handle.net/10394/1633 |